DESIGNING WITH HEAT PUMP WATER HEATERS with... · 2019. 6. 24. · DESIGNING WITH HEAT PUMP WATER...
Transcript of DESIGNING WITH HEAT PUMP WATER HEATERS with... · 2019. 6. 24. · DESIGNING WITH HEAT PUMP WATER...
DESIGNING WITH HEAT
PUMP WATER HEATERS
By GARY KLEIN AND
SEAN ARMSTRONG
[email protected] 707.826.1450
[email protected] 916.549.70801
THE SOUTH LEADS IN BUILDING ELECTRIC HOT WATER SYSTEM IN MULTAMILY
HOUSING TO SAVE INFRASTRUCTURE CONSTRUCTION COSTS
ARCATA, CA LED WITH THE FIRST 100%
SOLAR OFFSET APARTMENT COMPLEX
(2012) AND USED HEAT PUMP HOT WATER
HEAT PUMP WATER HEATER MANUFACTURERS
(ALSO SOLD UNDER OTHER BRAND NAMES)
MULTIFAMILY ZNE RESEARCH SITES
FOR HEAT PUMP HOT WATER STUDY
WHOLE HOUSE VARIABILITY IS HIGH, YET BOTH LOWEST
CONSUMPTION AND AVERAGE CONSUMPTION INCREASE
BY ONLY 1 KWH/PERSON
IN ENERGY STAR CERTIFIED APARTMENTS IN
CALIFORNIA, DHW IS THE LARGEST LOAD
DHW ENERGY USE IS FLAT FOR 2-5 OCCUPANTS;
RESISTANCE CAN BE AVOIDED WITH HOTTER STORAGE
(E.G. 135F), MORE VOLUME (E.G. 65-80 GALLONS)
RESISTANCE ENERGY IS USED TO MEET
PEAK LOADS TWICE A DAY
Heat
Pump
CENTRAL HOT WATER SYSTEMS USE
TWICE AS MUCH ENERGY
(BOTH GAS AND ELECTRIC)
Calistoga Family ApartmentsFunded by Tax Credits, USDA 514 and CUAC Utility
Allowances. Central HVAC/DHW Hydronic systems
double energy use.
CENTRAL HOT WATER SYSTEMS USE
TWICE AS MUCH ENERGY
(BOTH GAS AND ELECTRIC)
EPIC Central Heat Pump
DemonstrationEdwina Benner Plaza, Sunnyvale, CA
Edwina Benner Plaza, Sunnyvale, CA
CENTRAL HOT WATER SYSTEMS USE TWICE AS MUCH ENERGY
(BOTH GAS AND ELECTRIC)
CENTRAL HOT WATER SYSTEMS USE TWICE AS MUCH ENERGY
(BOTH GAS AND ELECTRIC)
CENTRAL BOILER TO HEAT PUMP RETROFIT
ENERGY SAVINGS
HEAT PUMPS FOR POOLS
King Station Apts, King CityFunded by Tax Credits, USDA 515
Belle Vista Apts, LakeportFunded by Tax Credits, USDA 515
ZERO NET CARBON MULTIFAMILY IS GETTING TALLER
WITH 80 GALLON HEAT PUMPS IN HALLWAY CLOSETS
SUPPORTING 2 APARTMENTS
Coliseum Place in Oakland, by RCD Hillandale Gateway in DC, by Duffie Inc.
GO LOW STEP 1: 80 GALLON HEAT PUMPS IN HALLWAY CLOSETS;
3/8” AND ½” COPPER FROM MANIFOLDS SUPPORTING 1-2 FIXTURES;
MINIMAL BENDS, 26+ PSI MAINTAINED
CAN LESS FASTER HOT WATER DELIVERY
REDUCE BEHAVIORAL WASTE?
STRUCTURAL AND BEHAVIORAL WASTE ARE
ROUGHLY EQUALLY RESPONSIBLE FOR
WASTING 25+% OF SHOWER DHW
GO LOW STEP 2: A THERMOSTATIC VALVE
TO HALT BEHAVIORAL WASTE AND LOCK
IN STRUCTURAL WASTE SAVINGS
GO LOW STEP 3: A VARIETY OF 1.5 GPM
SHOWERHEADS ARE FAVORABLY REVIEWED,
2.0 GPM FOR RAIN HEADS