Macro-encapsulation of heat storage phase-change materials for use in residential buildings. Final report, September 29, 1976-September 6, 1978

• Main Authors: Lane, G. A., Kott, A. C., Warner, G. L., Hartwick, P. B., Rossow, H. E.
• Format: Report
• Language: English
• Published: Dow Chemical Co., Midland, MI (USA) 1978
• Subjects: Research Programs; Buildings; Urea; 25 Energy Storage; Building Materials; Organic Compounds; Ammonium Nitrates; Calcium Halides; Magnesium Nitrates; 32 Energy Conservation; Consumption; And Utilization; Amides; Calcium Chlorides; Encapsulation; Heat Storage; Ammonium Compounds; Heating; Eutectics; Chlorides; Bromides; Phase Change Materials; Materials; Calcium Compounds; Magnesium Compounds; Nitrates; Alkaline Earth Metal Compounds; Chlorine Compounds; Storage 250600* > Energy Storage > Thermal; 320100 > Energy Conservation; & Utilization > Buildings; Halogen Compounds; Nitrogen Compounds; Bromine Compounds; Latent Heat Storage; Oxygen Compounds; Halides; Carbonic Acid Derivatives; Organic Nitrogen Compounds; Energy Storage; Solar Heating; 14 Solar Energy; 140901 > Solar Thermal Utilization > Space Heating & Cooling; 142000 > Solar Energy > Heat Storage > (1980-); Carbonic acid
• Online Access: https://doi.org/10.2172/5765326; https://digital.library.unt.edu/ark:/67531/metadc1101831/

Objectives are to assess the feasibility of macro-encapsulated PCM's for residential solar systems, to develop and evaluate such materials. Encapsulant materials under consideration are multilayer flexible plastic films, steel cans, and plastic bottles. Studies were done in a storage test unit on: CaCl/sub 2/.6H/sub 2/O encapsulated in polyethylene bottles, Mg(NO/sub 3/)/sub 2/6H/sub 2/O in steel cans, Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic encapsulated in flexible plastic film packages, NH/sub 4/Br/urea eutectic in polypropylene bottles, and a combined bed of CaCl/sub 2/.6H/sub 2/O and Mg(NO/sub 3/)/sub 2/6H/sub 2/O/NH/sub 4/NO/sub 3/ eutectic. In most cases, charge and discharge capacities in excess of 90% of theory were obtained. Several designs using encapsulated PCM were analyzed, one was selected, and preliminary designs were developed for a demonstration project.