Suitable for a Restaurant or Public House

A 200-litre tank with integral heat exchangers with 12kW capacity

Restaurants have a constant hot water usage which is subject to peaks during busy service periods. Hot water production using a heat recovery system is usually uniform so to accommodate peaks requires a greater storage capacity to be installed. A DK heat recover system would be fitted up stream of the boiler to provide the unchanged heating system with pre heated water at 50°C. This means that either the existing boiler will have nothing to do or operate at a lighter load. Keeping the original boiler in place will reduce installation costs and provide a backup should the refrigeration system be switched off for any reason.

A 18kW system with a 200-litre storage tank would produce 240 litres of hot water at 50°C every hour to cope with the continuous water demand and 200 litres of water ready to cope with the peak demands

Assuming a 7-day operation with an average of 12 hours per day the system will save 42,000 kWh of heat energy when using electricity for heating (more if oil or gas is being used).

Note: Savings are calculated using only 75% of the systems capability

Tank Cost £ 4,400
Estimated Install Cost (by your appointed installer) £ 3,500
The Savings Gas Electric Oil
Energy Saved (adjusted for boiler efficiency and reduced condenser fan running times) 49,394 kWh 42,457 kWh 49,394 kWh
CO2 emissions saved Tonnes each Year 9.0 t 9.9 t 13.2 t
Cash Saving per Annum £ 3,602 £ 10,348 £ 4,558
10 Year Return on Investment (with 5% fuel inflation) £ 45,280 £ 130,074 £ 57,291
Pay Back in Months 26 9 21