Weak current College】 【General energy consumption of refrigerating systems and heat recovery principles.

<br> Heat recovery air conditioning principle <br> First, conventional air-conditioning refrigeration system energy consumption problem <br> Industry insiders know, and not "refrigeration" is a simple process of cooling, and natural cooling compared to a "cooling" .process is actually through the consumption of certain external energy (such as electricity, heat, solar energy, etc.), the heat from the "low temperature heat source" to "high-temperature heat source" process. Therefore, we passed the " .cooling "refrigerant temperature reduction, coupled with the accomplishment of transformation of energy, will generate more than cold heat. At present the vast majority of air-conditioning design, this part of the heat use, not only did not to consume water pump and fan .power, heat through the condenser cooling medium (water, air, etc.). If we are able to use this part of the heat, you can implement a one-way energy output, bi-directional, greatly improving the energy efficiency of refrigeration .units, also saves the energy consumption of the cooling system. <br> 2. heat recovery principles <br> Cold water directly into the water heater pipe inlet, counter current loop absorption compressed after the high temperature and pressure of the refrigerant from the heat ., not only can improve the efficiency of the condenser systems and achieve the purpose of heating in cold water. Heated hot water (55 ° c ~ 60 ° c) directly into the storage insulation water tank in case the domestic hot water. The air conditioning .system is based on the power to drive the work, rather than the electric energy to heat. Under the terms of an energy conservation, electrical resources are abundant, but electricity direct heating way not only power-intensive, running costs are high, and the .electric heating tube, easily damaged; for general use fuel boiler heating way, due to high fuel prices, the resulting efficiency is not high. Therefore, the heat recovery air conditioning technology in energy-saving effect is very significant, and the system in the .summer cooling of hot water is absolutely free. <br> Heat recovery air conditioning features and advantages <br> Simply put, heat recovery air conditioning is a refrigeration cycle of refrigerants condensing exothermic process gives off heat utilization up hot water preparation. In today's energy .tension, lack of resources, energy, environmental protection has become the theme of sustainable development, and air conditioning as one of the main building's energy consumption, how to save energy from the air conditioning is on the urgent need to face the problem. Heat recovery .air conditioning energy saving effect is significantly affected by the growing number of industry concern that scholars and their itself has the features and advantages are inseparable. <br> I. characteristics of heat recovery air conditioning <br> 1. for the purposes of the air .-conditioning system, simple, reliable, without adding other electronic control system, high automation, reliable operation, no security risk. <br> 2, hot water system water temperature constant (not too cold, thermal phenomena happen), can simultaneously realize multiple .points of water supply to meet the different needs of domestic hot water requirements. <br> 3, installation is easy and convenient, not subject to restrictions, safe place, long service life. <br> 4. energy-saving environmental protection, running .costs, high economic efficiency. <br> Second, the advantages of heat recovery air conditioning <br> 1. heat recovery system makes full use of waste heat from the air conditioning system, air conditioning system in the low-grade heat effectively used together .to achieve the purpose of saving energy. <br> 2, hot add system reduces the waste heat to the environment; at the same time, due to the abolition of the cooling tower, reduces the noise around the building, the effective protection of the .environment around the building. <br> 3. use a heat recovery system, users no longer need to set the water heater in your home, to the user convenience and security; at the same time, using a heat recovery system, owners can simplify .or eliminate hot water heating system, which also simplifies operation and management of the system. Use a heat recovery system, is the use of waste heat and domestic hot water heat, thus reducing user fees for using domestic hot water. <br> 4, .and electric or diesel-driven systems and gas water heater (furnace) and other products, with no security threat, reliable operation, long service life, water temperature constant (not too cold, thermal phenomena happen), both the superiority of multiple-point .of water. <br> 5, and solar water heater, has not affected by the installation site, easy to install, no leakage, safety, long life, 24 hours hot water supply, water temperature constant (not too cold, thermal phenomena happen .). <br> 6, and compared to the heat pump water heater with a multi-purpose function can provide hot water all the year round, you can provide for indoor air conditioning all year round. <br> 7, and compared to the .traditional central air conditioner, have multiple features, in addition to providing all year round for room air conditioning air-conditioning cooling load, thermal load, you can provide constant temperature all the year round to the room's central hot water. Run the adjustment flexibility ( .multiple press, multiple system), the pipeline system is simple, energy-efficient, running costs are the characteristics of the province. <br> Third, and the traditional central air conditioning and gas boiler energy efficiency comparison <br> On the economy, .some need for indoor air conditioning and central heating supply locations (such as hotels, hotel, salon, etc.), such as using the traditional central air conditioner the additional input of gas-fired boilers to auxiliary heating purposes, its heat recovery air conditioning .on input and the economics of running period of comparative disadvantages macro as follows: <br> (1), the use of heat recovery-central air conditioning unit can dispense with boiler equipment, ie save device saves the investment and the building area of boiler .room; <br> (2), in the summer you can save all of the hot water heating costs, even in the winter running cost is only 1 / 3 of the boiler, the annual savings for users is very impressive boiler operation cost; .<br> (3), the unit can be installed on roofs, terraces, floor, etc., do not occupy the building area, can save considerable construction area, especially in Chongqing City more cost-effective; <br> (4) ., no cooling water system, save the cooling towers, water pump and cooling water pipeline system investment and installation work, saving the cost of this item, in the normal run-time saving large amounts of cooling water consumption; <br> (5) ., a high degree of automation, load adjustment range is wide, in different seasons and loads better meet regulatory requirements, with traditionalCentral air conditioning unit incomparable load trial, have very significant energy efficiency. Especially at night, excessive season, when more obvious low load .; <br> (6), single vibration and low noise, little impact on architecture, design, installation and handling of good use of the building will have no effect; <br> (7), stand-alone operation and maintenance costs low ., the economic and energy saving <br> Heat recovery air application <br> Heat recovery air handling units with room air conditioning and hot water supply Central itself determines its characteristics can be applied to the field of air conditioning and hot water. In today's era .of energy shortage, day-in energy-saving advantages of reveals its air conditioning and hot water the development potential of the area. <br> In General, like hotels, hotels, hospitals, public bathrooms and some food processing plants, and other users ., in cooling, it also uses a variety of fuel or electricity-heating boilers, water heaters, steam oven preparation of hot water, consume large amounts of energy. If the refrigeration cycle refrigeration condensing exothermic process gives off heat utilization up hot water preparation, .in the open air season, or the use of refrigeration equipment, can be 50-60 ° c for preparation of hot water, sufficient to meet the rooms bath, kitchen, washing and process with hot water and other uses. This will not only improve .energy efficiency, reduce energy consumption and pollution, and saving energy costs. <br> Therefore, heat recovery air conditioning the best suitable occasion is Hotel, hotel, salon, restaurant, hospital, Villa and the need to focus on integrated provides air conditioning and .hot water and other public facilities. <br> <br> <br>.