The energy problem is an international problem, with the development of the society, energy crisis, shao. The energy problem has become more problems hindering the development of the society, therefore the world countries are actively looking for alternative energy, solar energy is one of them. Solar energy is

An inexhaustible clean energy, has the power to mining and transportation pin point and shortcoming in the low energy density, and solar radiation by U day and night, season, and the influence of climate factors such as weather, characterized by periodic and intermittent. At present a lot of balls through air conditioning workers in research of the application of solar energy in a central air conditioning system, should now at most, is also one of the most successful is the solar energy water heater.

Said earlier energy storage water loop heat pump is a water or external heat source, so if there is no F water and will not be able to install the external heat source? Seems to be so, but it's not the life. In the case of conditions have, also can use solar energy as the central string the system of water ring heat source. Smell of 2, 7 is a small office building design of solar energy storage water loop heat pump systems. Receiver system is mainly composed of solar energy, energy storage heat water tank, water loop heat pump units, terminal equipment, etc. Energy storage in the hot water tank has a set of heat exchanger are connected to the solar receiver in the heat exchanger, the heat exchanger in the group of heat exchanger with solar receiver is filling in the ethylene glycol. Energy storage in another set of heat exchanger in the hot water tank is connected with the water loop heat pump system, the internal filling was also.

Solar receiver design is the most crucial here, the winter by solar receiver absorption effect, heat exchanger in the ethylene glycol solution, through natural convection heating energy storage in the water in the hot water tank; Summer heat out through the solar receiver, lower the temperature of the heat exchanger in ethylene glycol, through natural convection reduce energy storage in the temperature of the hot water in the water. Use of solar energy receivers to energy storage for heating hot water tank, that everyone can understand. How can the solar receiver can heat? Here is the plate solar receiver. Solar water heater by receiving plate, sun board, insulation materials, throttle, shell and so on, its structure is shown in figure 2-8.

Summer, add lamb on the sunshine board a layer of reflective film, avoid the solar radiation heating for heat exchanger, due to open the throttle effect using benzoin, white - r6J air through the heat exchanger surface, reduce the temperature of the heat exchanger in ethylene glycol solution. Then, through the natural convection reduce energy storage in the temperature of the hot water in the water.

Winter heating by solar receiver for energy storage in hot water in the water for heating, energy storage in hot water in the water for water loop heat pump system to provide the heat source. Because of a solar water heater heating capacity affected by the weather, the pd system of large quantity of heat is very small, can't heating at night, when solar receiver can't heating, through a phase change heat release of ice water to ensure the normal running of system c so) of energy storage in hot water tank cannot little, otherwise, will not be able to ensure long-term normal operation of the system c

When summer cooling, water loop heat pump system to releasing heat energy storage in hot water in the pulp, to make the system run normally, can with the temperature of the tank is no more than 40 curtilage, therefore, must to cool the seedlings to the water in the tank. Cool a lot of methods, one of the most common is the use of cooling tower for cooling, using this method is used to pump cooling tower, consume - a power c runtime because this office building is small, not 500 m 2, need to send out quantity of heat is less, so the bligh flue effect is adopted in the design, use of flue effect to reduce the energy storage in the temperature of the hot water tank. For more than 0 curtilage temperature gap between day and night, the night the cooling effect is very good. For energy storage tank water temperature is mainly through the night to ask cooling. And as a result of long storage tank volume is dazu county can meet the cooling pipes of system during the day.

Adopting this design to installation requirements is very strict, because both heating and cooling, solar heat exchanger in the receiver is by nature to flow to transfer heat energy storage in hot water tank, by J: USES is natural convection, so the direction of the pipe, the slope is very strict. Here is to use natural convection heat transfer, and the use of cooling flue effect, mainly from energy saving point of view. If the circulating pump, circulating pump must be at least 300 w, according to the daily running 10 h, run 2 concave day a year, a year will consume cangue kw. H power, so the system design using natural convection and flue effect on heat transfer.