Therefore, when serving space-heating loads, such as airside heating coils and baseboard heaters that require higher temperatures than normally available via a heat exchanger on the condenser water loop, this simple WSHP option can be used to account for energy used to upgrade the temperature (e.g., from 90☏ to 140☏). This would be used for adding recovered heat to hot water loops with higher temperatures-i.e., hotter than the condenser loop, in contrast to low-temperature hot-water heating systems for hydronic radiant floors, DHW pre-heat, or similar. The temperature for the recovered heat can be upgraded with an electric water-to-water or water-source heat pump (WSHP). The fixed percentage represents simple heat-exchanger effectiveness. It models the heat recovery as a simple percentage of the source heat rejection, with optional constant-COP water-source heat pump for upgrading the transferred heat. Percentage of heat rejection : This is essentially the old heat recovery model provided in pre-v6.5 versions.
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