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Sanhua, supplier kruunupyy of large manufacturers internationally kruunupyy established, the automotive sector, appliance and HVAC & R, obtained certification Keymark EN215 series of thermostatic expansion kruunupyy valves RFKA. EN215 certification certifies that the entire process of production and quality control of thermostatic valves Sanhua, complies with Directive KeymarkTRV Directive because it satisfies the requirements of EN 215-2007. The Keymark is a voluntary quality mark for products and services. It 'held jointly by the European standardization kruunupyy bodies CEN and CENELEC. The system is operated by Keymark certification bodies that have been authorized by the CEN. The rigorous certification methodology offers the assurance that the service or product demonstrates continuous compliance kruunupyy with all European standards (EN) apply. In the current year, the German Din Certco therefore granted the certification number kruunupyy 'ID80' confirming the fact that the thermostatic valves Sanhua comply kruunupyy with EU standards and can be commerciazlizzate in all countries in the European Union. The thermostatic expansion valves series RFKA, designed to Hangzhou by the dynamic team Sanhua Research Institute (SRIC, part of Sanhua Holding Group) are to be used to adjust the mass flow rate of the refrigerant in the evaporator kruunupyy and operate by controlling the level of refrigerant superheat evaporator outlet. They can be used for different types of refrigerant kruunupyy in a variety of working conditions. Some possible applications are in plants for refrigeration, kruunupyy ice machines, dehumidifiers, as well as units for air conditioning and heat pumps operating with different values of the evaporation temperature. The certification must be obtained kruunupyy in the direction of the continuous expansion of Sanhua, synonymous with quality and reliability internationally for over thirty years, is in the top 100 of the strongest brands Chinese industrial. Strategic acquisitions of Sanhua major brands kruunupyy such as HVAC projects Ranco and AWECO and joint-venture kruunupyy with Danfoss Sanhua make one of the most active producers of solenoid valves and reversing valves with 100 million units sold
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Unfortunately preamplifiers noteworthy and traceable around the figure you indicated are not many b

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Sricve Fabio52: Hello, established that the mic preamps built in sound cards are not the best and I notice it more with the guitar than with the voice, well consider that the most used professionally for our beloved amp is that the API 512C alone costs about 800 and is to be raccare as it has no power for which it recommended its rack "lunchbox" ish too, I was wondering if there is something satisfying about 200, but it offers no shortage I wish that the quality remains similar to that obtained with the pre integrated sound card, I saw a tube of pre electro harmonix, the 12AY7, with valves powered 200v and not starved circuits with low voltage, it looks very nice, what do you use / recommended to pre-amplify the classic sm57 home recording in situations with an eye to quality?
Presonus BlueTube DP costs about 215 has two channels (Mic / Line) for each channel and uses a technology called Dual Path. This technology brings the signal through two-stage preamp. The first solid-state and the other valve. So Transistor and valve (12AX7).
SM Pro Audio TC02 costs about 210, has two channels with mic / line inputs separate, high pass filter, phase reverse and phantom power. The valve used is a 12AX7. It also features adjustable compression (up to 10: 1), adjusting attack time, release time reglolazione.
Unfortunately preamplifiers noteworthy and traceable around the figure you indicated are not many but I'm sure if there were others, the thick utility charges Accordo.it will report them.
Register as well without spending a bang? (06/09/2009) Fifty years of Home Recording - 60 Years (21/02/2011) Pills amplification Live (09/11/2013) Registration & Headphones (29/10/2004) Chronicle live recording of the group ( 07/11/2009)
Thanks, I know the pre-yourself reported, would also add the study projects vtb-1, also with a 12AX7 and ability to have both sound solid state that the valve and also the middle ground by a knob that mixture administrative attention valve (which works at low voltage) on the signal, the electro harmonix between these and the only truly valve, would try it out though.
Costs little more than 200Euro, was born to the voice but I gave good satisfaction with the guitars, among other things has a compressor that recalls (same setting) 160A of the same house. The response on the medium to high seems more apt other pre such as, for example, the Focusrite VoiceMaster Pro (always with reference to the guitars). Hello and Merry Christmas, Emiliano
Re: Check out this.
Ok, thank you, is that the experience has taught me to be a bit 'away from that brand, I think that if we have already given importance (with many sacrifices) to the quality american style fridge of our instruments american style fridge worth storing the same attention to you need to register them, not just to try to make the hit of the century but also to do justice to what the microphone will resume, the chain, the performance instrumentation (guitar-amp-effects) acquisition (including now also conversion to / from) listening to the recording must have a balance otherwise american style fridge it's useless, of course all at once is difficult to have but little by little you can do.
I jumped voluntarily american style fridge preamps Behringer because one of the parameters required by the user Fabio52 is quality. Then, without detracting from the Behringer, who also created some good product.
Fabio52 Hello, my feeling using some pre in the price range mentioned above is that these do not differ that much from pre integrated sound cards. I use a TubePre the Presonus, with valve section mixable, cute, but the sound is not that great either. Besides that I often find myself having to equalize wildly tracks to pull off the "life", even after treatment the sound is quite muffled american style fridge and "bland". I believe that in the end is the only purchase a pre higher level, without necessarily go to API or Snow or Avalon, to say! But spending a little 'more. You can find info such as the "Solo" Universal Audio (the ONLY 110, solid state, and the SOLO 610, valve) or the P-Solo's True System (Ochio model Ribbon that you should not matter). Costicchiano, sure. More or less three times the amount you're willing to spend, but I think it worthwhile to consider them so you do not r

The warmth of

The energy problem in Italy is unfortunately present and subject of ongoing studies. Our society consumes much more energy than can produce, mainly using non-renewable sources which are then available in limited quantities.
Ptetrolio, natural gas, coal going to run out. Continuing to burn fossil fuels, is increasing more and more the production of CO2 that is causing tangible effects on climate change. 20% of the energy consumed in Italy is used in the domestic sector to meet the daily needs of families.
While the production coralreefer420 of electricity from renewable sources is already on the agenda of the policy of many countries, only solar energy and biomass (which is also linked to solar) are widely recognized as renewable sources for heating .
We have seen, however, that the environment coralreefer420 remains stored a quantity "almost infinite" of energy in the form of heat at a temperature lower than that required to heat our buildings. Just pick it up with the "heat pumps", which will transfer it to sources at temperatures high enough to allow the heating of our buildings, with a moderate energy coralreefer420 expenditure for this "lifting" coralreefer420 level (hence the term "pump").
The warmth of 'environment used by the technology of the heat pump can provide heating and cooling to cover the needs of a variety of users, private landowners, public and commercial, across Europe.
Currently heat pumps have reached a high level of efficiency and therefore should be the first choice of "renewable" for heating and cooling in Europe. Although the market for heat pumps in the EU has grown strongly in recent years, coralreefer420 there is still a large untapped potential that can be used instead for applications with heat pump. Some of the limitations to their use are the high cost of investment, coralreefer420 lack of knowledge and awareness among end users and poor institutional financial support.
If these obstacles are overcome, the demand for heat pumps will continue to grow, making it one of the most important technologies today can cover the reduction of energy use.
The systems of quality assurance for production units as well as the programs of information, education and certification for those in the sector concerned, will also imply a greater king reliability.
The increase in market share, improving the economic and environmental efficiency, and progress towards a mix of electricity more environmentally affirm increasingly coralreefer420 Heat Pumps as a technology that uses renewable sources of energy.
The technology of the heat pump uses the energy supplied by air, water and soil to provide heating and production of hot water, turns into useful energy in an energy low enthalpy present in the environment, which would remain unused.
The use of heat pumps increases energy efficiency, use of renewable energy sources and contributes coralreefer420 substantially to reductions in emissions of greenhouse gases.
Heat pumps can be used in the residential and service coralreefer420 sector, in new and renovated buildings. The technology of heat pumps in recent years has improved significantly and the current state of the art is able to express very high efficiency and high reliability.
While the electricity used by the heat pump is sometimes seen as a weakness of the technology, it can be considered a major advantage coralreefer420 with respect to the environmental effect on the total system: CO2 emissions are reduced by about 75% compared the heat produced by heating plants using fossil fuels (referring to a SPF4, factor of rendering of the season, and the year 2010).
Furthermore, the positive environmental impact of all the heat pumps installed increases with every improvement of the efficiency of the individual units and with the 'increase in the share of renewable energy sources in the energy mix for the production of electricity.
It uses the same technology of the refrigerator: coralreefer420 a certain "fluid (refrigerant)" carries the heat from a source to a low level of temperature to an area of higher temperature level.
In "heating", the source of heat is outside the building (heat from environmental air, water, soil); in cooling coralreefer420 mode, the cycle is reversed: coralreefer420 the building itself is the source of heat, while the exterior is used as a heat sink.
For this transfer of heat ("raising the level")

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Geothermal Energy, a conscious choice (before finalizing the house) | EcoVirgola
In the renewable energy, geothermal energy is to take energy gelo from underground by inserting probes into the ground. These radiate sufficient energy to heat or cool a home. A rule this type of system are two modules, each of which is constituted by a pair of polyethylene pipes. They form a closed circuit (a tube of "forward" and one of "return") within which a fluid circulates "glycolate" (mixture of water and antifreeze non-toxic). The tubes of the probes are connected to a collector connected to the heat pump. In winter, the glycol medium goes down deep and subtracts thermal energy. When he returns to the surface at a higher temperature causes the 'evaporation of the refrigerant circulating in the system gelo of the heat pump. The liquid expands and absorbs heat from the external source, or through geothermal gelo probes, from the ground. The evaporator outlet the fluid, now in the gaseous state, is sucked into the compressor which, driven by an electric motor, provides gelo the 'mechanical energy required gelo to compress the fluid, thus determining an increase in pressure and consequently the temperature . The fluid is so to be in the optimum condition to pass through the condenser gelo (heat exchanger). In this phase there is a new change of state of the fluid, which passes from the gaseous to the liquid transferring heat to air or water which are used as the carrier fluid for space heating or for the production of sanitary water. The cycle ends with the last phase where the liquid passes through an expansion valve partially transformed into steam and cooling down, thereby returning to the initial conditions of the cycle. As for summer air conditioning, the cycle is reversed and the system assigns to the ground gelo the heat extracted from the internal raffrescandolo. In general, for summer gelo air conditioning one is forced to the cooling of refrigeration equipment with the air, the temperature of which reference is the summer of 32º. Using geothermal gelo probes, the reference temperature is instead of about 14º-16 , the temperature jump in the machines which are to produce chilled water at 7th, is drastically reduced, significantly increasing the yield and reducing, consequently, in a relevant way the energy consumption and operating costs. To this is added the advantage of being able to perform gelo also a precooling of directly using the circulating fluid in the geothermal probes, while the chilled water is only used for dehumidification by cooling the air below the dew point. With heat pumps is therefore has the advantage of exploiting a single machine which, thanks to a valve becomes reversible because it presents the possibility of reversing the functions of the evaporator and the condenser, thereby providing cool air in summer and warm air in winter. The inversion between the two systems, heating and cooling, can be done either gelo with a 'reverse cycle or reversal on the plant.
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The solenoid valve with non-return valve incorporated is designed commercial coolers to replace a s

The solenoid valve with non-return valve incorporated is designed commercial coolers to replace a solenoid valve on the liquid line in parallel to a non-return valve for the reversal of the cycle. This valve can be used in the liquid line of exhibitors of supermarkets for the seal during the stopping phase, while allowing the full flow of refrigerant in the reverse direction, during hot gas defrost. It can also be used in the liquid line of a heat pump to prevent the migration of refrigerant to the outdoor condenser during the heating phase, while allowing the full flow of the refrigerant when flowing in the opposite direction commercial coolers in the cooling phase. Note: Reverse Flow / cooling cycle, the valve closes. Maximum operating pressure - Valves Series E42 - 31 bar, for all other models - 34.5 bar.
The three-way valves for Sporlan Heat Recovery have hermetically sealed in synthetic commercial coolers materials, specifically designed for switching the passage of the hot gas from the condenser to the normal recovery. Operation Type "B" Normal Capacitor (External) - De-energized - With the pilot valve de-energized, the discharge pressure can not enter the assembly of the upper cavity sealing piston. At the same time the pilot has the upper open passage to the suction pressure. The resulting pressure differential on the piston, pushes the piston seal in the closure of the passage of the recovery condenser (top). commercial coolers When the pilot valve opens, the cavity above the piston opens on the intake. The emptying of the recovery condenser is controlled by the calibrated hole on the piston. After the recovery condenser was emptied, and the valve continues to work on the capacitor normal all flows cease, thus eliminating the transition from high to low and the consequent loss of capacity. commercial coolers Type "C" Normal Capacitor (External) - De-energized - With the pilot de-energized, the discharge pressure can not enter into the cavity above the assembly piston seal. At the same time the upper part of the rider is open on the suction pressure. The resulting differential pressure, leads to the set-sealing piston commercial coolers to close the main passage of the recovery condenser (upper). The piston does not bleed prevents communication between the pressure side and suction operation with only normal capacitor. Type "B" commercial coolers and "C" capacitor Recovery (Heating) - Energized - When the pilot valve is energized, the discharge pressure can pass to the lower part of the pilot. At the same time the upper part of the pilot passage is closed on the suction side. The discharge pressure pushes on the top of the piston and moves the piston-seal together to close the passage on the capacitor normal and open the passage of the recovery. With the passage upper closed there is no communication with the suction and discharge system that operates at the recovery. Systems for Heat Recovery with pressure regulator outlet, double condenser with non-return valve incorporated When using a heat exchanger in a refrigeration system, the addition of a pressure regulator flow is important not only to maintain commercial coolers the pressure of the liquid at the entrance of the valve, but also to ensure the availability of a good hot gas to the heat recovery exchanger. Valves on the condenser double are important to minimize the demand for refrigerant commercial coolers in the winter. 3-way valves with non-return valve Integrated are important commercial coolers to minimize the costs of installation.
The valves for hot gas defrost are used in systems in which one or more compressors feeding different refrigerated exhibitors both medium and low temperatures. The 3-way valves are used to control the flow of gas from the outlet manifold to the various refrigerated exhibitors (defrost) or suction gas from the refrigerated exhibitors to the intake commercial coolers manifold commercial coolers (refrigeration). The direction of flow depends on the fact that the coil of the pilot valve is energized or de-energized. These valves 3-Vie are only used for hot gas defrost. When the coil is de-energized the valve allows the passage of the refrigerant in the normal direction of refrigeration. When the coil is energized the piston and its housing seat of the valve, switch, close the door and open the suction inlet port of the gas flow, allowing the hot gas to pass from the outlet manifold through the valve, to 'output dell'evaporator

For this embodiment, we have chosen the use of a lathe smallest: the Proxxon PD230E on which they a

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It is connected to a rather complex system used walk in coolers which, in practice, shifts the movement of the slide valve relative to the movement of the plunger or piston used walk in coolers of the engine, resulting in that the motor can rotate both ways.
The lever is made with a finger square brass. In this part there are several details that are entrusted to the taste of realization of the manufacturer and therefore purely aesthetic, but they have, however, their importance used walk in coolers and giving a very pleasing to our model. As they say: the eye wants its part!
For this embodiment, we have chosen the use of a lathe smallest: the Proxxon PD230E on which they are normally made in the laboratory, the smaller parts and always with the required accuracy.
The picture below to the left, showing the reversing lever for turning with the use of the tip of the tailstock support, to ensure that the material does not have to undergo used walk in coolers deformation, given its length to its diameter.
In the right picture you can see the part made and still to be polished and drilling, also with a view of some of the parts previously manufactured with the use of CNC milling machine, which we discussed in the previous article, and which are always part of ' rotation inverter.
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The electronic expansion valves, developed together with a known car manufacturer are able to impro

Important numbers and milestones mark the thirty-year history of Sanhua, a manufacturer of components and control systems for HVAC & R area: 12,000 current employees; $ 2 billion of total revenues; over 100 million deltatherm units sold; full range of products and unique certificates; the acquisition of Ranco (4-way valves) and AWECO. Sanhua is headquartered in Ningbo, Zhejiang province (China) deltatherm and the European headquarters in Madrid.
German Cifuentes, marketing manager of Sanhua Europe: "It all started with a small establishment. Today Sanhua is among the top 500 industrial companies in China and among the 100 Chinese brands with greater value. Two out of three air conditioners worldwide mountain valves Sanhua. A success story of just 30 years. "
"The secret of our success - says German Cifuentes, marketing manager of Sanhua Europe -is true work mainly on customer deltatherm needs, deltatherm provide the best service possible, develop guarantees of reliability and focus on innovation constantly. Experienced engineers and designers work to improve the efficiency of the products and perform continuous quality controls. We employ the best students of local universities in stages to ensure the next generation deltatherm of men Sanhua. All this makes us fit for the future. "
The products Sanhua are controlled strictly in production through deltatherm the QC system (zero defects) and provide the customer with a competitive advantage that translates into tangible cost savings and gain market share.
Sanhua invests 4% of annual turnover in R & D, whose department has developed components for the market that will not only satisfy fully the stringent European directives, but allow the production of equipment for reduced emissions and optimized energy consumption with excellent value / price.
The wide range of products Sanhua includes 4-way reversing valves, solenoid valves, service valves, electronic expansion valves, check valves, filter driers, accumulators, collection containers for liquids, and much more. Since the acquisition of the 4-way reversing valves from Ranco, completed in 2007, Sanhua is considered a world leader in this field.
In particular, the microchannel heat exchangers with the battery fully made of aluminum and copper are the lack of another product key Sanhua which guarantees the professional user a series of advantages such as a reduction of the refrigerant charge of up to 70% and a significant cost savings through the machine more compact, and better system efficiency HT up to 30%.
The 4-way reversing valves Sanhua with nominal 350 kW and 420 provide, for the first time in a unique and compact body, the switching between heating and cooling systems heat pump of very high capacity.
The electronic expansion valves, developed together with a known car manufacturer are able to improve the performance of the machines and to better manage the degree of superheat of the evaporator coils, with a result far better than the conventional thermal expansion valve.
Acquisition of AWECO, Sanhua drew rather large advantage in the appliance deltatherm industry, particularly for washing machines and coffee makers. Today can boast collaborations with prestigious brands in the different application areas, such as Bosch, Siemens, Mitsubishi, deltatherm GM and Honda.
The commitment deltatherm of Sanhua for the next 30 years is to continue to develop deltatherm innovative products and highly efficient as well as environmentally deltatherm friendly. In Europe Sanhua will focus on finding new partners for the distribution of its product deltatherm families, working actively in all countries from the Madrid office, deltatherm led by general manager Ilan Peleg and working deltatherm through their own logistics center located in Cremona.
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