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Abstract: Soil heat pump combined with radiant heating, full indoor and outdoor systems the advantages of air-conditioning system is an excellent villa program. This article describes the unit works, given in the application of radiation plate has a lot of unique, set up two sets of soil heat pump refrigeration system, independent and different seasons of the indoor state meet the requirements. Introduced the unit's technical features: made the room dew point temperature control unit of the method, set the dehumidification cycle to ensure that condensation does not appear the phenomenon of cooling region; unit introduced a new air system can be adjusted according to different seasons, fresh air and exhaust air volume will take heat pump fresh air ventilator and the soil heat pump host integration; energy efficient is another major characteristic of such units. Prototype has been running for many years, run by experts praise effect. Keywords: Dew point control of soil heat radiation plate Introduction Radiation plate mode using convection and radiation cooling and heating, indoor temperature distribution, the vertical temperature difference dropped to 3 [1], high thermal comfort; room without moving parts, Ning Jingyi people; located in the floor, wall, etc. Building Structure coil structure can assume the role of storage at room temperature fluctuations small. Advanced technology, is a new air conditioning system. Soil as heat source heat pump is based on the land for construction of air-conditioning technology. It is an energy saving, environmentally-friendly green air-conditioning, comply with the requirements of sustainable development [2]. In recent years, with the development of real estate, villa market is rapidly expanding. In the villa zone, soil heat pump underground heat exchange can be arranged in the garden, lawn, garage, etc. Now, without affecting the use of floor space. Therefore, from the household point of view of household air conditioners, heat pumps and radiant heating of soil organic combination, villa air conditioning system is an excellent program. View of the radiation plate in the application has many unique features, this article focuses on the soil heat pumps with matching principle and performance characteristics of the work. 1 works 1.1 System Overview Radiation plate can not do without air system, this is because on the one hand to provide a minimum of outside air to ensure indoor air quality, on the other hand, to carry out air dehumidification of indoor air to prevent condensation of radiation plate [1]. Points from the system function, radiant heating in summer was only the burden of the indoor heat load, moisture load from the return air treatment; winter radiation plate to provide the indoor heat load. Any season, the radiation plate not afford the new wind load. Unit how to meet these requirements, there are different ways to the summer as an example. Option One: 7 in refrigerator to provide chilled water, part of the fan directly into the new, on through the dehumidification of outdoor fresh air, after cooling, into the interior; the other part, enter the plate heat exchanger, exchanging a high-temperature chilled water delivery into the radiator. Option Two: 7 in refrigerator to provide chilled water, part of the fan directly into the new, the other by three-way valve and return water mixture into the radiator. This article describes the use of two sets of soil heat pump refrigeration system. Compared with the two programs have the following advantages: Cooling unit when the temperature of chilled water directly without the need for secondary heat exchanger to improve efficiency of the unit. Fresh air, radiant heating using different cooling systems, division of labor, independent and meet the performance requirements of different seasons. 1.2 units of the main functions Unit works shown in Figure 1. Dotted lines from the icon, the unit can be broadly divided into two parts: the host, summer, winter starts, to the radiator to provide cooling, hot water; new fans, with a separate heat pump system, new air or return air for proper disposal, to meet the work requirements in different seasons. Outside the pump room to share the two systems. Interior design temperature and humidity sensors to detect air-conditioned room dry bulb temperature and relative humidity. Calculated by programming the room dew point temperature. New air valve and bypass valve with the indoor return air temperature and dew point moves accordingly. The soil heat pump can be run four seasons, to maintain indoor comfort, health, air-conditioned environment. Figure 1 Schematic unit of work 1, new air valve 2, return air bypass valve 3, 4, heat recovery, exhaust fan 5, blower 6, 7, fin heat exchanger, reversing valve 8, the compressor 9, gas-liquid separator 10, Room 11 outside the heat exchanger, two-way filter 12, two-way thermal expansion valve 13, expansion tank 14, pump 15 indoor and outdoor water pumps 1.3 working conditions in different seasons Soil heat pump consists of three operating modes: refrigeration, heating, ventilation. Summer: Host burden of indoor cooling load, cooling through the radiator to the room; the burden of the new wind load of new fans as well as to avoid land (top) plate condensation dehumidification load. Therefore, cooling mode, the operation of the new fans into the new wind patterns and dehumidification mode. Radiation panel cooling, if the interior side of the dew point temperature higher than the set requirements for floor or roof to prevent condensation, the new fan work in the dehumidification mode. Dehumidification, the new cooling system fan running, outdoor new air valve closed, the indoor return air bypass valve open, exhaust fan working, blower, the indoor air continuously circulating through fin exchanger (evaporator) temperature dehumidifier to enter the room with low moisture content of the air, gradually reduce the indoor air dew-point temperature. When the indoor dew point temperature to meet the operational requirements, the new fan work in the fresh air mode. Outdoor air valve to open the new indoor return air bypass valve closed, sending, exhaust fan opening, the new cooling system fan running. Outdoor fresh air cooled by heat collector first, by the blower through fin exchanger (evaporator) after cooling indoor air; indoor part of the air absorbs heat by heat collector, by the exhaust fan to the outside row. Jin, roughly the same amount of exhaust to maintain positive pressure room appropriate. In the water temperature without causing condensation within the interior roof, host compressor starts, the indoor water pump continuously transported to the radiation will be cold plate. Winter: Host burden of indoor heat load, heat through the radiator to the room; the burden of the new wind load of new fans. Soil heat pump heating, the interior, the outside water pump first starts, the host compressor start, four-way reversing valve, compressor discharge into the indoor heat exchanger (condenser), absorbed from the soil shed heat, delivered by the pump room of the radiation plate, uniform heat to the interior. New outdoor fan starts a new air valve open, indoor return air bypass valve closed, the compressor starts, reversing valve guide, compressor discharge into the fin heat exchanger (condenser), from soil absorb the heat shed. Outdoor air temperature by heat recovery heat exchanger, the blower I am an expert from chinaweldinggloves.com, while we provides the quality product, such as Furniture Leather Gloves Manufacturer , China Winter Leather Gloves, Cow Leather Gloves,and more.
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