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Title: Method of energy load management using PCM for heating and cooling of buildings

A method of energy load management for the heating and cooling of a building. The method involves utilizing a wallboard as a portion of the building, the wallboard containing about 5 to about 30 wt. % a phase change material such that melting of the phase change material occurs during a rise in temperature within the building to remove heat from the air, and a solidification of the phase change material occurs during a lowering of the temperature to dispense heat into the air. At the beginning of either of these cooling or heating cycles, the phase change material is preferably "fully charged". In preferred installations one type of wallboard is used on the interior surfaces of exterior walls, and another type as the surface on interior walls. The particular PCM is chosen for the desired wall and room temperature of these locations. In addition, load management is achieved by using PCM-containing wallboard that form cavities of the building such that the cavities can be used for the air handling duct and plenum system of the building. Enhanced load management is achieved by using a thermostat with reduced dead band of about the upper half of a normal dead bandmore » of over three degree. In some applications, air circulation at a rate greater than normal convection provides additional comfort.« less
Inventors:
 [1];  [1]
  1. (Knoxville, TN)
Issue Date:
OSTI Identifier:
870350
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5501268
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
method; energy; load; management; pcm; heating; cooling; buildings; building; involves; utilizing; wallboard; portion; containing; 30; wt; phase; change; material; melting; occurs; rise; temperature; remove; heat; air; solidification; lowering; dispense; beginning; cycles; preferably; charged; preferred; installations; type; interior; surfaces; exterior; walls; surface; particular; chosen; desired; wall; locations; addition; achieved; pcm-containing; form; cavities; handling; duct; plenum; enhanced; thermostat; reduced; dead; band; upper; half; normal; degree; applications; circulation; rate; convection; provides; additional; comfort; provides additional; interior walls; remove heat; interior wall; change material; method involves; phase change; interior surface; interior surfaces; exterior wall; load management; method involve; energy load; /165/126/252/392/

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