SDHWSolar Domestic Hot Water
SDHWSunny Days Healthy Ways (sun safety curriculum; Golden, CO)
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The performance analysis of the two SDHW systems and their components were performed in two testing periods, one in summer and the other in winter.
The performances of the two TRNSYS models must be validated first, and it is only then that they can be used to predict the energy consumption / producing of the SDHW systems and their components.
The annual energy consumption by the gas boiler and thermal energy ouput by the flat plate solar thermal collector from House-A SDHW system's TRNSYS model were found to be 2012.5 kWh (6.9 MBtu) and 3690.5 kWh (12.6 MBtu), respectively, which showed 1.3% and 0.8% difference from the experimental data.
In this study, the performances of the two SDHW systems were simulated for a typical household in Toronto, Ontario.
Data on solar heat collection in a glycol heat exchange SDHW system was obtained from our industry partner, Scotian Windfield.
Despite the low thermal conductivity of lauric acid, the experiment was able to demonstrate a rudimentary LHESS operating with modest heat exchange temperatures, akin to SDHW systems, requiring charging periods of less than 6 hours and subsequent withdrawal in less than 3 hours.
fin number and spacing, and multiple passes), the rudimentary LHESS design using lauric acid is a promising choice for the development of a full scale LHESS to be used in SDHW residential and commercial applications.
When including a SDHW system to this scenario, energy savings in the order of 43% could be achieved and when integrating both GSHP and SDHW system, the energy consumption could be reduced by as much as 70%.
SDHW systems have been subjected to many studies in the past.
Characteristics of a SUI-NZEHH House Heated volume 685 [m.sup.3] (24191 f[t.sup.3]) per unit Heated area 210 [m.sup.2] (2260 f[t.sup.2]) per unit Ceiling area 64.43 [m.sup.2] (694 f[t.sup.2]) per unit Exposed wall area 361.97 [m.sup.2] (3896 f[t.sup.2]) per unit Glazing area (north) 23.2 [m.sup.2](250 f[t.sup.2]) Glazing area (south) 33.6 [m.sup.2](362 f[t.sup.2]) Glazing area (east) 26.48 [m.sup.2](285 f[t.sup.2]) Glazing area (west) 30.34 [m.sup.2](327 f[t.sup.2]) The SDHW system was modeled using the TRNSYS simulation model.
The SDHW system is a good alternative to conventional systems because of its environmental benefits.
The second part of this study performed sensitivity analysis for one of the SUI-NZEHH houses with a two-panel SDHW system.