LPG → Heat-pump
payback calculator.
Most LPG process heating in Filipino food & bev, hotels and laundries can be displaced by a high-COP heat pump in under 3 years. The maths is straightforward; the variable that catches people out is COP at tropical wet-bulb. We bake that in.
— Inputs
kg / yr
₱ / kg
%
₱ / kWh
₱
— Result
1.5 yrs
Simple payback · pre-tax · static energy prices
Annual energy saving504 MWh-th
Annual peso saving₱1,603,927
Heat-pump electric load140,007 kWh/yr
Effective COP (PH ambient)3.6
CO₂e avoided44.8 tCO₂e/yr
10-yr NPV @ 9%₱9.6M
Assumptions & methodology
-
LPG energy content:
46.1 MJ/kg(DOE Philippine Energy Reference, 2024) - Grid emission factor:
0.7122 kgCO₂e/kWh(DOE NGCP 2023) - LPG combustion factor:
3.01 kgCO₂e/kg -
COP de-rated for Manila ambient (avg 30 °C / 26 °C WB) per
EN 14511at supply temperature - Maintenance delta and refrigerant losses excluded — material only at scale >500 kW
- NPV: 9% discount, 10-yr horizon, 4% energy escalation