CN103283533A

CN103283533A - Solar greenhouse ridge heat recovery method

Info

Publication number: CN103283533A
Application number: CN2013101946340A
Authority: CN
Inventors: 缪祥辉; 杨春建; 孙义; 杨川陵
Original assignee: Qinghai Academy of Agricultural and Forestry Sciences
Current assignee: Qinghai Academy of Agricultural and Forestry Sciences
Priority date: 2013-05-23
Filing date: 2013-05-23
Publication date: 2013-09-11

Abstract

The invention belongs to the technical field of recovery and reuse of solar greenhouse heat, in particular to a solar greenhouse ridge heat recovery method. The method includes acquiring greenhouse ridge heat, transferring ridge heat, and exchanging the ridge heat. In greenhouse ridge heat acquisition, heat in hot air at the greenhouse ridge is collected 10-40cm below the ridge of a solar greenhouse, and the greenhouse ridge heat are acquired in two ways; in ridge heat transferring, heat-bearing medium obtained in greenhouse ridge heat acquisition is transferred for the ridge heat exchange procedure by a conveying line and a power pump; in ridge heat exchanging, heat in the heat-bearing medium is subjected to exchange, storage and application through a heat accumulator. The method mainly has the advantages that harmful heat in the greenhouse is harmlessly utilized effectively and novel ways of efficient utilization for solar greenhouse heat are developed.

Description

The recovery method of solar energy greenhouse ridge heat

One, technical field: the invention belongs to the recovery and utilization technology field of greenhouse by solar heat heat energy, special

The recovery method that relates to a kind of solar energy greenhouse ridge heat.

Two, technical background: practice shows, existing greenhouse is retrained by interior, the gas that has a large amount of heat energy in its greenhouse can't circulate swimmingly, through studying in large quantities and observing, under the driving of solar thermal energy, partly tend to form rapidly the accumulation regions of heat at the crestal culmination of greenhouse by solar heat, even in the winter of cold, as long as irradiation of sunlight is arranged, the temperature of this subregion can both reach 40 ~ 60 °, after this zone is constantly expanded and extended downward the plant vitellarium, very easily the plant in its greenhouse is damaged, even cause plant early ageing or blue or green doing until death.In the face of this situation; people can not have the way of taking to open the vent window on the crestal culmination usually anti-ly; make this part heat discharge outside the greenhouse in large quantities; and this part heat of discharging is equivalent to 15 ~ 30% of gross calorific value that the greenhouse receives in the daytime; and produce for the vegetables in greenhouse winter of shortage of heat; this part heat lose very big loss really, how these heats of effective recycling are the production of greenhouse vegetable, are that people are studying and problem demanding prompt solution.

Three, summary of the invention:

The objective of the invention is at the prior art above shortcomings, and a kind of solar energy greenhouse ridge heat recovery method of development, the recovery method of this solar energy greenhouse ridge heat can overcome the above-mentioned deficiency that prior art is brought effectively, the main innovate point of the recovery method of this greenhouse ridge heat is to be harmful to the heat of crops and to be that most valuable heat has carried out recycling effectively innoxiously, opened up the efficient new way of utilizing of greenhouse by solar heat heat, its thinking and technical scheme are very novel, in the application of greenhouse by solar heat

Surely belong to initiative, its economic and social benefit is very remarkable.

Its technical scheme is: the feature of the recovery method of this solar energy greenhouse ridge heat is that it is by the ridge thermal recovery collection in greenhouse, spine's transfer of heat, three operations of spine's exchange heat are finished, the ridge thermal recovery collection in greenhouse is that 10-40cm gathers at the place heat in the high hot-air of greenhouse spine below the spine of greenhouse by solar heat, the ridge thermal recovery collection in greenhouse has two kinds of collecting methods, a kind of is the high hot-air method of directly gathering greenhouse spine, second kind is to be that heat-absorbing medium absorbs greenhouse spine calorimetry with water, adopt conveyance conduit and kinetic pump to concentrate the thermal medium that contains that obtains to be delivered in spine's exchange heat operation and to handle the ridge thermal recovery in greenhouse in spine's transfer of heat, spine's exchange heat is that a heat that contains in the thermal medium that obtains is exchanged storage application with heat storage.Heat storage can be water or soil or cement prefabricated component, be that heat storage can adopt following three types: the one, adopt pvc pipe to be coiled in the soil under the growing area 40-60cm, be heat storage with soil, directly increase the crop ped location soil temperature, this mode is cold especially at temperature, and winter, soil temperature was on the low side and obviously to restrict the regional effect of plant growth better.The 2nd, non-growing area arranges members such as hollow cement or Hollow brick in the aisle etc., as heat storage, utilize the bigger characteristic of cement prefabricated component heat storage coefficient, allow cement prefabricated component absorb heat, after evening, outside air temperature descended, the heat of cement prefabricated component inside progressively discharges and replenishes dispersed heat in the greenhouse again, allows the greenhouse remain on a higher temperature levels, keeps the normal growth of crop.The 3rd,, will fail the heat pipe opening and place the cistern bottom as heat storage with the irrigation water in the greenhouse, when hot-air discharged by water body, also with the Chi Shui heating, heated Chi Shui emitted heat in night, or promoted soil temperature by irrigating.The ridge thermal recovery collection operation in greenhouse is the process of gathering heat in the high hot-air of greenhouse spine in the spine of greenhouse by solar heat, the high hot-air method of directly gathering greenhouse spine is the method that the high hot-air of greenhouse spine is directly gathered at the 10-40cm place below the spine of greenhouse by solar heat, and the method is both economical to be suitable for; With water be heat-absorbing medium to absorb greenhouse spine calorimetry be to absorb the method for greenhouse spine heat with the lower water of temperature as heat-absorbing medium, the method transfer of heat efficient is higher, but investment is bigger.Spine's transfer of heat operation is to adopt conveyance conduit and kinetic pump to concentrate the thermal medium that contains that obtains to be delivered to process in spine's exchange heat operation the ridge thermal recovery in greenhouse, and spine's exchange heat operation is heat in the thermal medium exchanges storage application with heat storage the process that contains that obtains.

The basic principle of the recovery method of this solar energy greenhouse ridge heat is that greenhouse ridge heat is exported in the lower heat storage of temperature from the ridge hot-zone, this part heat of recycling can grow vigorously the crops in the greenhouse in night or the cloudy temperature that promotes or keep soil or greenhouse under suitable temperature condition.The main innovate point of this invention is that the harmful heat in the greenhouse has been carried out effective innoxious use, has opened up the efficient new way of utilizing of greenhouse by solar heat heat.

Four, embodiment:

Embodiment 1: the recovery method of this solar energy greenhouse ridge heat is that it is by the ridge thermal recovery collection in greenhouse, spine's transfer of heat, three operations of spine's exchange heat are finished, the ridge thermal recovery collection in greenhouse is that the 10cm place adopts the high hot-air method of directly gathering greenhouse spine to gather the high hot-air of greenhouse spine below the spine of greenhouse by solar heat, adopt conveyance conduit and kinetic pump to concentrate the hot high hot-air that contains that obtains to be delivered in spine's exchange heat operation the ridge thermal recovery in greenhouse in spine's transfer of heat, adopt the heat in the hot high hot-air of containing that obtains pvc pipe to be coiled in the soil under the growing area 40-60cm in spine's exchange heat, be heat storage with soil, directly increase the crop ped location soil temperature.

Embodiment 2: the recovery method of this solar energy greenhouse ridge heat is that it is by the ridge thermal recovery collection in greenhouse, spine's transfer of heat, three operations of spine's exchange heat are finished, the ridge thermal recovery collection in greenhouse is that to adopt with water be that heat-absorbing medium absorbs greenhouse spine calorimetry and gathers heat in the high hot-air of greenhouse spine at the 40cm place below the spine of greenhouse by solar heat, adopt in spine's transfer of heat conveyance conduit and kinetic pump with the ridge thermal recovery in greenhouse concentrate obtain contain the thermal medium delivery to spine's exchange heat operation, heat storage in spine's exchange heat with irrigation water in the greenhouse as heat storage, the opening of defeated heat pipe is placed the cistern bottom, hot water discharges heat by water body, also Chi Shui is heated simultaneously, heated Chi Shui emits heat in night, or promotes soil temperature by irrigating.

Embodiment 3: the recovery method of this solar energy greenhouse ridge heat is that it is by the ridge thermal recovery collection in greenhouse, spine's transfer of heat, three operations of spine's exchange heat are finished, the ridge thermal recovery collection in greenhouse is that the 25cm place adopts the high hot-air method of directly gathering greenhouse spine to gather the high hot-air of greenhouse spine below the spine of greenhouse by solar heat, adopt in spine's transfer of heat conveyance conduit and kinetic pump with the ridge thermal recovery in greenhouse concentrate obtain contain the high hot-air of thermal medium, be delivered in spine's exchange heat operation, heat storage in spine's exchange heat is that non-growing area arranges members such as hollow cement or Hollow brick in the aisle etc., as heat storage, utilize the bigger characteristic of cement prefabricated component heat storage coefficient, allow cement prefabricated component absorb heat, after evening, outside air temperature descended, the heat of cement prefabricated component inside progressively discharges and replenishes dispersed heat in the greenhouse again, allow the greenhouse remain on a higher temperature levels, keep the normal growth of crop.

Claims

1. the recovery method of a solar energy greenhouse ridge heat, it is characterized in that it is by the ridge thermal recovery collection in greenhouse, spine's transfer of heat, three operations of spine's exchange heat are finished, the ridge thermal recovery collection in greenhouse is that 10-40cm gathers at the place heat in the high hot-air of greenhouse spine below the spine of greenhouse by solar heat, the ridge thermal recovery collection in greenhouse has two kinds of collecting methods, a kind of is the high hot-air method of directly gathering greenhouse spine, second kind is to be that heat-absorbing medium absorbs greenhouse spine calorimetry with water, adopt conveyance conduit and kinetic pump to concentrate the thermal medium that contains that obtains to be delivered in spine's exchange heat operation and to handle the ridge thermal recovery in greenhouse in spine's transfer of heat, spine's exchange heat is that a heat that contains in the thermal medium that obtains is exchanged storage application with heat storage.

2. the recovery method of solar energy greenhouse ridge heat according to claim 1 is characterized in that heat storage adopts pvc pipe to be coiled in the soil under the growing area 40-60cm, is heat storage with soil.

3. the recovery method of solar energy greenhouse ridge heat according to claim 1 is characterized in that heat storage is that non-growing area arranges members such as hollow cement or Hollow brick in the aisle etc., as heat storage.

4. the recovery method of solar energy greenhouse ridge heat according to claim 1 is characterized in that heat storage is as heat storage with the irrigation water in the greenhouse.