New phase-change thermal energy storage materials for buildings
A new class of phase-change thermal energy storage materials is under development at SERI. These materials are unusual in two ways. They reversibly absorb large amounts of heat during a solid-state, crystal transformation more than 70/sup 0/C below their melting temperatures, and their solid-state transformation temperatures may be adjusted over a range from 7/sup 0/C to 188/sup 0/C by varying the ratios of binary mixtures of the components. Because these storage materials remain solid throughout the range of their service temperatures, unique opportunities exist for incorporating them into building materials. Composites have been made with ordinary, porous construction materials such as wood, gypsum board, and lightweight concrete as the matrix and with the solid-state phase change materials (SS PCM) filling the void space. The thermal storage capacities of such composites are thereby increased by more than 100% without changing the basic nature and workability of the matrix, construction material. Parametric analyses have been conducted to determine what combination of properties would be optimum for certain solar and energy conserving building applications including Trombe wall, direct gain, and distributed cool storage (combined with night ventilation).
- Research Organization:
- Solar Energy Research Inst., Golden, CO (USA)
- DOE Contract Number:
- AC02-83CH10093
- OSTI ID:
- 6352846
- Report Number(s):
- SERI/TP-255-2727; CONF-850905-5; ON: DE85016861
- Resource Relation:
- Conference: ENERSTOCK '85 - international conference on energy storage for building heating and cooling, Toronto, Canada, 22 Sep 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
BUILDING MATERIALS
PHASE CHANGE MATERIALS
PARAMETRIC ANALYSIS
THERMAL ANALYSIS
COLD STORAGE
CRYSTAL-PHASE TRANSFORMATIONS
DIRECT GAIN SYSTEMS
HEAT TRANSFER
THERMAL ENERGY STORAGE EQUIPMENT
TROMBE WALLS
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
HEATING SYSTEMS
MATERIALS
PASSIVE SOLAR HEATING SYSTEMS
PHASE TRANSFORMATIONS
SOLAR EQUIPMENT
SOLAR HEATING SYSTEMS
STORAGE
WALLS
THERMAL ENERGY STORAGE
TROMBE WALL
DIRECT GAIN
DISTRIBUTED COOL STORAGE
142000* - Solar Energy- Heat Storage- (1980-)
140901 - Solar Thermal Utilization- Space Heating & Cooling
250600 - Energy Storage- Thermal