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Title: Passive integral solar heat collector system

Abstract

The present invention relates to an improved apparatus for collecting, absorbing, transferring, and storing solar heat energy, economically and passively, without pumps or electric power. The apparatus comprises a solar collector with a flat finned heat pipe absorber and an attached integral insulated storage tank with a double wall heat exchanger. The absorber, made of one or more slightly tilted gravity assisted heat pipes with flat absorber fins, absorbs and transfers solar heat by evaporation, vapor transport, and condensation to the slightly elevated heat storage tank. The one or more heat pipes turn on when the sun is shining and turn off automatically when the sun is not shining.

Inventors:
Publication Date:
OSTI Identifier:
5281543
Patent Number(s):
US 4513732
Assignee:
EDB-85-154905
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 19 Oct 1983; Other Information: PAT-APPL-543243
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; PASSIVE SOLAR HEATING SYSTEMS; DESIGN; FLAT PLATE COLLECTORS; HEAT EXCHANGERS; HEAT PIPES; HEAT TRANSFER; SOLAR ABSORBERS; THERMAL ENERGY STORAGE EQUIPMENT; ENERGY SYSTEMS; ENERGY TRANSFER; EQUIPMENT; HEATING SYSTEMS; SOLAR COLLECTORS; SOLAR EQUIPMENT; SOLAR HEATING SYSTEMS; 140901* - Solar Thermal Utilization- Space Heating & Cooling

Citation Formats

Feldman Jr., K. T. Passive integral solar heat collector system. United States: N. p., 1985. Web.
Feldman Jr., K. T. Passive integral solar heat collector system. United States.
Feldman Jr., K. T. Tue . "Passive integral solar heat collector system". United States. doi:.
@article{osti_5281543,
title = {Passive integral solar heat collector system},
author = {Feldman Jr., K. T.},
abstractNote = {The present invention relates to an improved apparatus for collecting, absorbing, transferring, and storing solar heat energy, economically and passively, without pumps or electric power. The apparatus comprises a solar collector with a flat finned heat pipe absorber and an attached integral insulated storage tank with a double wall heat exchanger. The absorber, made of one or more slightly tilted gravity assisted heat pipes with flat absorber fins, absorbs and transfers solar heat by evaporation, vapor transport, and condensation to the slightly elevated heat storage tank. The one or more heat pipes turn on when the sun is shining and turn off automatically when the sun is not shining.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 30 00:00:00 EDT 1985},
month = {Tue Apr 30 00:00:00 EDT 1985}
}
  • The present invention relates to a method and an improved passive apparatus for absorbing, transferring and storing solar energy as heat, economically and effectively, without pumps, solar tracking devices or electric power. The apparatus comprises an improved trough-type concentrating collector, a heat pipe heat absorber and an insulated storage tank. Solar energy is reflected and focused by the concentrator onto the absorber where the energy is absorbed as heat. The absorber, made of one or more slightly tilted gravity-assisted heat pipes partially filled with a volatile liquid, transfers the heat by evaporation, vapor transport and condensation into a slightly elevatedmore » heat storage reservoir. A method for filling the heat pipes is disclosed. The absorber serves as the main axial support for internal structural ribs over which are fitted a flexible transparent top cover and a flexible reflective bottom cover that comprise the concentrator. The apparatus collects solar energy, stores heat during the day and automatically shuts off to minimize heat losses at night. The apparatus may be refocused periodically to increase the temperature of the heat collected.« less
  • A device is claimed for passively transporting heat in any direction, particularly downwards, from a heat source to a heat sink. The device comprises a boiler for heating a working fluid, a container for condensing vapor of the heated working fluid, a means for transferring the said vapor from the boiler to the condenser, and means for transferring the working fluid from the condenser to the boiler. The working fluid is compelled from the condenser to the boiler, when the device is in use, by expansion of a compressible medium stored in the condenser. This medium is additionally compressed bymore » the vapor of the working fluid when the device is in use. In one embodiment the heat source for the boiler or the boiler itself is a solar collector.« less
  • The present invention relates to an integral solar energy collector storage systems. Generally, an integral collector storage system includes a tank system, a plurality of heat exchange tubes with at least some of the heat exchange tubes arranged within the tank system, a first glazing layer positioned over the tank system and a base plate positioned under the tank system. In one aspect of the invention, the tank system, the first glazing layer an the base plate each include protrusions and a clip is provided to hold the layers together. In another aspect of the invention, the first glazing layermore » and the base plate are ribbed to provide structural support. This arrangement is particularly useful when these components are formed from plastic. In yet another aspect of the invention, the tank system has a plurality of interconnected tank chambers formed from tubes. In this aspect, a supply header pipe and a fluid return header pipe are provided at a first end of the tank system. The heat exchange tubes have inlets coupled to the supply header pipe and outlets coupled to the return header pipe. With this arrangement, the heat exchange tubes may be inserted into the tank chambers from the first end of the tank system.« less
  • In an integral storage collector solar heating system, water heated in a conventional hot water heater is first preheated in an integral storage collector. The storage collector includes a heat storing medium, preferably clean water, in a storage tank. Water to be heated is forced by line pressure through heat exchange pipes immersed in the heat storing water. The heat of fusion of the storing water prevents freezing of the line water. To preclude excessive pressure in the heat storage tank with high temperatures of the heat storing water, a heat pipe is provided to act as a large heatmore » leak at about the vaporization temperature of the water. Also, a pressure relief valve is provided. The system avoids freezing and contamination of the water and does not require temperature control circuitry or a pump.« less
  • The invention relates to a solar energy system comprising a collector consisting of a sloping space exposed to solar light for a heat transporting medium performing a primary circulation, which is thermally coupled by the downward run with a working medium circuit. An object of the invention is to design a solar energy system in a manner such that in contrast to the conventional system no control or safety apparatus is required, since solely natural, physical mechanisms are used so that a self-controlling operation is obtained, as a result of which the risk of disturbances and standstill is considerably reducedmore » and the intrinsic safety is enhanced. The above-mentioned purposes are, in general, achieved by means of a system set forth in the preamble, the primary circulation of which takes place in a vessel partly filled with fluid and partly with the vapor thereof and operating as a heat pipe. The invention further provides a solar heat collector, the active surface of which is divided into cells bounded by upright ribs. Owing to the provision of such cells the dissipation of heat by convection due to wind brushing past can be reduced to negligible proportions.« less