PDF Publication Title:
Text from PDF Page: 025
Financial Analysis The costs and business case of installing a central heat pump water heating system as a retrofit to the existing electric water heating system is shown in Table 2. It outlines the baseline pre-existing electric water heater case for water heating and hot water circulation reheat, and the resulting retrofit HPWH system serving both the water heating and temperature maintenance loads. The total installation cost includes added equipment (HPWH units, added storage tank, and a thermostatic mixing valve), engineering costs, and added plumbing labor. The total project costs were relatively high because there is not a well-established market. The retrofit HPWH system has a simple payback of 18.3 years with no utility incentives. For typical projects, the local utility offers an incentive of $500/apartment for this type of equipment which would have reduced the payback time to 13.6 years. Based on more recent installations of smaller HPWH systems in the Seattle area (described in the next section), the retrofit system cost at the Site was significantly more. Even with original installation costs and potential incentives, this system is cost effective with the payback period being within the expected 15-year lifetime of the equipment. For this particular project, the installation and engineering/design costs were fully incentivized by City of Seattle’s Office of Housing HomeWise Weatherization Program5. Potential retrofit and new-construction projects may have different incentive 5 Charlie Rogers, City of Seattle, Office of Housing, HomeWise Program. Personal email. 2020-04-09. programs available to offset payback timelines, making heat pump water heaters an attractive, effective option. Additional insights from local HPWH installations City of Seattle Office of Housing shared installation costs for additional CO2 heat pump water heater retrofits at other local sites6. These projects represent multiple HPWHs installed at four complexes to replace existing electric resistance equipment, with 1- 2 HPWHs per townhome. Provided costs included materials, tax, permitting, labor (at State prevailing wage residential rates), etc. Aggregate costs for Sanden installation give a weighted average of $5,668 per installed Sanden heat pump. Extrapolating this rate to Site, where four Sandens were installed, HPWH equipment installation costs could be estimated at less than $23,000 or $378/apartment. A more robust market, established design guidelines, and competition among contractors, will lower installation costs. Central DHW systems, such as the one at this site, require additional equipment (an added storage tank and a thermostatic mixing valve) and involve potentially more plumbing / trades labor. The added estimated costs totaled an additional $2,000 each for the tank, the mixing valve, and additional components, and approximately double that sum in 6 Charlie Rogers, City of Seattle, Office of Housing, HomeWise Program. Personal email. 2019-01-15. BONNEVILLE POWER ADMINISTRATION 19PDF Image | CO2 Heat Pump Water Heater Multifamily Retrofit
PDF Search Title:
CO2 Heat Pump Water Heater Multifamily RetrofitOriginal File Name Searched:
co2-heat-pump-water-heater-final.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |