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The national charity store is running a pilot scheme installing Herschel Far Infrared heaters in a dozen shops around the UK including Scotland, the outskirts of London, East Anglia and the South Coast.
A selection of Herschel panels is being installed, depending on the store specification, including Advantage IR3 space heaters and Select suspended ceiling panels.
Improved Energy Consumption & Carbon Emissions
Building Type: Retail shop in a terraced parade
Concrete block & frame construction with limited insulation and flat roof
Ground floor – Double glazed shop front First Floor – Single glazed roof lights and windows
Area | Heater Type | Existing Heater Number | Existing Heater Output (kW) | Estimate of Additional Existing Heater Type Required (kW) | ||||
1st Floor Sorting Room | 3kW Convector Heater | 2 | 6 | 2 x 2kW = 4 | ||||
Ground Floor Shop | 3kW Convector Heater | 3 | 9 | 2 x 3kW = 6 | ||||
Ground Floor Office | 3.5kW Fan Heater | 1 | 3.50 | 1 x 2kW = 2 | ||||
Total | 6 | 18.50 | 12.00 | |||||
Estimate of Total Convector Heater Output Required (correctly specified) |
18.50 existing plus 12.00 additional (5 heaters) = 30.50kW (specified at correct required output) |
The Herschel Infrared Solution
Area | New Herschel Infrared Heaters Installed | Heater Numbers | Heater Output (kW) | |||
1st Floor Sorting Room | Herschel Advantage IR3 1950W Silver | 3 | 5.85 | |||
Ground Floor Shop | Herschel Advantage IR3 1950W Silver | 3 | 5.85 | |||
Ground Floor Office | Herschel Advantage IR2 1300W Silver | 1 | 1.3 | |||
Total | 7 | 13.00 |
Consumption | Current | Herschel Infrared* | Savings | % Saving** | ||||
kW/hrs |
Electric – 30.50 kW/h (see notes above: assumes extra heaters installed on existing system) (heaters on 9hrs a day for 180 days pa) = 49,410 kW/hrs pa |
13 kW/h (heaters on 6hrs per day for 180 days pa) = 14,040 kW/hrs pa |
17.50 kW/h 35,370 kW/hrs pa |
72% | ||||
Costs ** | £5,435 | £1,544 |
£3,891 savings pa after supply and install cost |
72% | ||||
Note: 72% saving is a reduction based on Herschel far infrared when compared to the ‘correctly specified’ convection solution. Compared to the actual convection heating, incorrectly specified at 18.50kW, the saving is 53%. |
Payback using Herschel Solution * | |
Estimated Payback Period for supply and install cost | 7.06 months |
Note: 7.06 months payback is based on Herschel far infrared compared to the ‘correctly specified’ convection solution. Compared to the actual convection heating, incorrectly specified at 18.50kW, the payback is 16 months. |
% Reduction in Kg CO2e & Kg Carbon*** |
Current | Herschel | Savings pa | % Savings pa ** | ||||
Emissions Kg CO2e | 22,837 | 6,489 | 16,348 | 72% | ||||
Emissions Kg Carbon | 6,234 | 1,772 | 4,462 | 72% |
The charity has now installed Herschel Far Infrared heaters in a number of other UK locations in Scotland, Greater London, East Anglia and the South Coast. A selection of Herschel heaters is being installed, depending on the store specification, including Advantage IR3 space heaters and Select suspended ceiling panels.
These units are being monitored for their energy consumption and to demonstrate the energy savings for Herschel heaters over the traditional convector heaters that were in place. The Herschel heaters offer additional benefits with no annual maintenance costs, improved comfort levels and flexible control and management of the heating system.
If the savings expected are realised, it is anticipated that the heating technology will be used as a core part of their energy savings initiative across the wider portfolio.
*Estimates from charity store and their FM adviser based on 6 hours of intended use for Herschel Infrared heaters for 180 heating days per annum
**Unit price assumed £0.11 per kW/h excluding daily standing charge. % Savings are rounded & all figures exclusive of VAT
*** (Using Carbon Calculator www.carbon-calculator.org.uk)
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