Economic viability of a solar charged thermal energy store is determined primarily by the construction cost of the store which in turn affects the number of lifecycle array replacements.
TRNSYS also allowed varying of system parameters to refine sizing and layout of mechanical equipment. HAP ver.4.3 does not allow simulation of solar charged seasonal water storage therefore TRNSYS was required to simulate the thermal energy flows between the building, solar array and the thermal store.
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These loads accounted for occupant levels, scheduled occupancy, ventilation losses, skin losses and internal gains such as people and equipment. A building heat load profile was created in Carrier Hourly Analysis Program (HAP). John, British Columbia with Heating Degree Days of 5847oC day/year 18oC. Weather data is cold climate relative to Fort St. The school is occupied throughout the year less the summer which allows for charging of the thermal store. The building model is a 2700 m2 school with twenty one classrooms, a gymnasium and administration offices serving 400 students and 24 staff. A tank type hot water thermal energy store (TES-HW) was selected for review due to its benefits relative to cost, safety, thermal conductivity, dependability and interaction between the solar collector field and the building heating system. It also offers flexible plant operation while minimizing environmental impact through reduced fossil fuel consumption. A thermal energy store decreases primary energy consumption while increasing equipment efficiency. Master thesis 30 hp, 2013 Solar Energy Engineering Student: Manuel Melo Supervisor: Tomas Perssonĭalarna University Energy and Environmental TechnologyĪbstract A thermal energy store corrects the misalignment of heating demand in the winter relative to solar thermal energy gathered in the summer. Master Level Thesis European Solar Engineering School No.178, November 2013Įconomic Evaluation of a Solar Charged Thermal Energy Store for Space Heating
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