689results about How to "Improve heat collection efficiency" patented technology

The invention provides a solar heat absorber which comprises an inlet, a channel part and a collecting part. Heat-collecting media enter the solar heat absorber from the inlet. The channel part is arranged to be connected with inlet fluid so that the heat-collecting media can enter the channel part through the inlet. The collecting part is arranged to be connected with fluid of the channel part so that the heat-collecting media can enter the collecting part from the channel part. According to the solar heat absorber, ceramic particles are adopted to serve as the heat-collecting media. The solar heat absorber operates stably and is high in heat-collecting efficiency. In addition, the invention further provides a solar heat collecting system comprising the solar heat absorber, and a solar power generation system comprising the solar heat collecting system.

An electronic control unit inputs from temperature sensors a temperature of the heating side of a thermoelectric conversion section assembled to each of brake units provided for left and right rear wheels. When the temperature of the heating side is equal to or lower than a predetermined temperature, the electronic control unit drives and controls a brake hydraulic pressure control section so as to operate the brake units preferentially over brake units provided for left and right front wheels. With this operation, each of the brake units generates friction heat, and heats the heating side of the corresponding thermoelectric conversion section, whereby the thermoelectric conversion section efficiently collects thermal energy and generates electrical power. Meanwhile, when the heating side temperature is higher than the predetermined temperature, the electronic control unit drives and controls the brake hydraulic pressure control section so as to decrease the proportion of the braking forces applied by the brake units and increase the proportion of the braking forces applied by the brake units.

The invention discloses an automatic tracking solar heat collector pedestal, and belongs to the energy collection field; the automatic tracking solar heat collector pedestal comprises a H-shape support and a pedestal; a sensitization assembly can monitor the sun mobile conditions, and sends the mobile conditions to a motor control module, thus respectively controlling a rotary motor and a lifting motor, arranged in the solar heat collector pedestal, to operate; therefore, the solar heat collector carried by the solar heat collector pedestal can be directly irradiated by the sun in a long time, thus prolonging sun light irradiation reception time, and improving heat collector thermal-arrest efficiency.

The present invention provides an air-solar dual-heat source synchronous composite type heat pump apparatus, which comprises a solar collecting and storage part, and an air-liquid dual-heat source synchronous composite type solar heat pump part. Wherein, the solar collecting and storage part comprises a solar collector (4), a solar storage water tank (5), a living water tank (6), a heat exchanging coil pipe (17), a first circulation water pump (7), a second circulation water pump (8), a connecting pipeline and a valve. The composite type solar heat pump part comprises a compressor (1), a fin sleeve casing composite type heat exchanger (2), a user side heat exchanger (3), a first capillary tube (13), a second capillary tube (14) and a check valve (15), a four-way reversing valve (16), and the connecting pipeline and the valve and so on. The heat exchanger (2) comprises an outer sleeve casing (22), an inner sleeve casing (23) through arranged inside the outer sleeve casing and a fin (21) combined with the outer wall of the outer sleeve casing. A ring type space existed between the outer wall of the inner sleeve casing and the inner wall of the outer sleeve casing is a medium channel (19), and another medium channel (18) is formed by a pipe cavity of the inner sleeve casing. A third kind of medium channel (20) is formed between the outer wall of the outer sleeve casing and the fin.

The invention is a solar-gas engine heat pump heating device, namely a heating device integrating the solar energy utilization technique with the gas engine heat pump technique, composed of solar heat collecting system, gas engine heat pump system and water circuit circulating system and comprising engine, compressor, heat preservation water tank, expansion valve, tee valve, intermediate heat exchanger, heat collector, air source evaporator, fume heat exchanger and flow regulating valve. And it has three different working modes: when external solar radiation intensity is enough high, the gas engine heat pump does not work and it can meet the requirements by directly utilizing solar energy; when the solar radiation intensity is so low that the water temperature in the water tank is very low, the heat pump is switched on and works with the air as heat source; and when the solar radiation intensity is intermediate, the gas engine heat pump works with the solar heated working medium as heat source. And it can in all weathers and continuously supply 80-90 deg.C hot water.

The invention discloses a heat supply and refrigeration system combining spatial energy with ground source energy, which comprises a heat collector, a heat storage water tank group, an air energy machine set, an expansion tank, a lithium bromide absorption type refrigerating unit, an auxiliary heating device, a climatic conditioning cabinet, a ground heating cooling system, a water pipe, a temperature control pump, a temperature control exhaust valve, a ground source hot water supply pipe and a water pump, wherein two hot water collection tanks A and B are arranged at the top part of the heat collector, and the ground source hot water is preferably used as water supply of the heat collector in winter. The water tank A is matched with air energy to provide circular hot water for ground heating radiation in winter and is matched with the auxiliary heating device to provide heat medium water to a solar refrigeration air conditioner in summer, the air energy machine set is matched with the ground source energy to refrigerate in summer, and the water tank B is used for providing domestic hot water for a long time. The heat supply and refrigeration system disclosed by the invention is smart in design, novel in conception, simple in structure and low in manufacturing cost, and solves the problem that a solar water heater and an air energy water heater cannot provide hot water if affected by weather, realizes the purposes of supplying heat in winter and refrigerating in summer and circularly utilizes the hot water with afterheat, so as to provide domestic hot water and high temperature hot water for 24 hours in the whole year of 365 days, so that the heat supply and refrigeration system achieves the social benefit of energy conservation and environment protection and the economic benefit of cost reduction.

The invention discloses a photovoltaic photo-thermal integrated device with a night radiation refrigeration function. The device comprises a body module and a transmission module; the body module is abox body with openings in the top surface and the bottom surface, a heat collecting plate and a radiation refrigerating plate are arranged in the box body, the heat collecting plate and the radiationrefrigerating plate form a closed cavity with four side walls of the box body, the closed cavity forms a fluid heat exchange cavity, and a water inlet and a water outlet are formed in the two side walls of the box body; photovoltaic cells are uniformly arranged on the outer surface of the heat collecting plate of the closed cavity, a glass cover plate covers the position, corresponding to the opening of the box body, of the heat collecting plate, and a full-wave-band high-transmittance material film covers the position, corresponding to the opening of the box body, of the radiation refrigerating plate; and the transmission module comprises a motor, two connecting rods, two cranks, two rotating shafts, two supporting shafts and a bracket, so that the top surface and the bottom surface of the box body can be freely switched by starting the motor. The device integrates photovoltaic power generation, solar heat collection and night radiation refrigeration functions, and has the advantagesof being high in heat collecting efficiency, adjustable in angle, good in practicability and the like.

The invention discloses an integrated pressure-bearing heat pipe flat-plate solar water heater and belongs to the field of flat-plate solar water heaters. The solar water heater comprises main components, such as a water tank, a flat-plate heat collector, a bracket and the like, wherein a heat absorption plate core of the flat-plate heat collector is formed by welding a heat pipe and an aluminum plate or a copper plate on which a heat absorption coating is plated; and a condensation section of the heat pipe is positioned outside the heat collector and inserted into the water tank and directly exchanges heat with water in the water tank. Due to an integrated design, the flat-plate solar water heater has the characteristics of high heat collection efficiency and heat absorption speed, compression resistance, frost resistance, high impact resistance, long service life and the like.