Method for chilling a building
a building and chilling technology, applied in the field of building chilling, can solve the problems of loss of temperature or energy, relative large material consumption of solar cooling units, etc., and achieve the effects of reducing the number of units, removing undesired temperature loss, and reducing the cost of materials and associated components
Inactive Publication Date: 2014-06-19
PURIX
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Benefits of technology
The present invention is a solar chiller that uses the sun's radiation to heat a working solution, which then evaporates to cool the environment or industrial process. The invention reduces energy loss and temperature increase in the cooling system by using a hermetic pump for the solution circulation, which avoids shaft sealings and reduces the leak rate of the chiller system. As a result, the chiller's coefficient of performance is not affected and the frequency of servicing is potentially reduced.
Problems solved by technology
The present day solar cooling units require a relative large material consumption due to heat / cool storage, moving parts, multiple fans / circulation pumps, multiple heat exchangers, or the need for evaporation tower as well as dry cooler.
Each of these components is associated with loss of temperature or loss of energy.
Method used
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[0058]FIG. 1: The figure shows a schematic display of a single effect absorption solar chiller cycle. The solar chiller is powered with solar thermal energy (1) or other sources of heat source and produces cold liquid refrigerant for air conditioning. The evaporator (5) shown as a unit with separated tubes can be located near to the solar thermal panels (1) or at a distance as appropriate. The system can be located underneath or adjacent to the solar thermal panels.
[0059]The solution may be added corrosion inhibitors, mass transfer accelerators, or other chemical substances for improving the performance and lifetime of the equipment or for reducing the need for maintenance. In cases where the working fluid consists of lithium bromide and water, the concentration of the solution may be in the range of 45 to 65%, preferably 50 to 63% and optimally 54 to 60% mass of Libr. The system operates under vacuum at an absolute pressure corresponding to an evaporation temperature of 6-20° C.
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A method for chilling a building includes the steps of: heating a working solution contained in a solar panel using solar radiation, separating the heated working solution in vapor and a concentrated working solution, condensing the vapor to liquid refrigerant, evaporating the liquid refrigerant, (i) in a building to be chilled or (ii) outside a building to be chilled, wherein the cooling obtained by evaporation is transferred to a cooling liquid outside the building and transported to the building to be chilled for delivery of the cooling, absorbing in an absorber the vapor in the concentrated working solution, and returning the working solution to the first step.
Description
INTRODUCTION[0001]The present invention relates to a method for chilling a building as well as a building chilling system using solar thermal energy. The invention aims at providing an improved solar absorption cooler while reducing resource consumption.BACKGROUND FOR THE INVENTION[0002]In warm climate regions or spaces which due to externally or internally heat sources increase in temperature above acceptable conditions, the need for cooling arises. The cooled spaces may be homes, offices, schools, hotel spaces, bungalows, storages rooms, process areas and applies where condition of space, processes or goods are required. Therefore, to avoid temperatures that exceed the comfort zone or acceptable temperature range, a building may have an air condition unit installed. The most common air condition unit is a chiller operated by electricity which converts electricity into a supply of thermal cooling (typically air or chilled water).[0003]Where simultaneous presence of the sun and the ...
Claims
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IPC IPC(8): F25B27/00F24F1/0007
CPCF25B15/06F25B27/007F24F5/0014F24F5/0035F24F2005/0064Y02B10/20Y02B30/62Y02A30/272F24F1/0007Y02A30/27Y02B30/54F25B27/005
Inventor MUNKOE, LARSFRIDBERG, CHRISTIAN HOLM
Owner PURIX