Cost-efficient Buildings
Independent reports have been carried out comparing capital costs of TermoDeck and conventional HVAC systems.
All these reports demonstrate that the TermoDeck system has a lower capital cost compared to conventional HVAC systems. This makes TermoDeck unique as both the capital costs and the operating costs are lower than for conventional systems.
The main reasons are:
- Elimination of water radiators
- Elimination of chilled beams or fan coils
- Reduction in cooling loads by35-50%. This results in savings due to smaller sized chillers, less electrical connection charges, less transformers, etc
- False ceilings can be eliminated or heavily reduced if required
Capital Cost Comparisons
Middle East:
The ASA Consulting Report. See Table 1.
TABLE 1: RELATIVE COST COMPARISON TES AC / CONVENTIONAL AC
AC System | Capital Cost | Operating Cost |
---|---|---|
Conventional AC | 100 | 100 |
Ice / Chilled Water Storage TES AC | 185 | 106 |
TermoDeck TES AC | 80 | 60 |
Source: ASA Consulting (2005)
UK:
A cost comparison called “TermoDeck Cost Analysis”” by Gardiner & Theobald and Mott McDonald has been produced which shows that TermoDeck has lower capital costs than Comfort Cooling (chilled beams).
See Table 2.
TABLE 2: COMPARISON IN CAPITAL, RUNNING & MAINTENANCE COSTS (UK)
Option | Description | Capital Cost | Annual Running cost | Annual Maintenance Cost |
---|---|---|---|---|
1 | Comfort Cooling | £8,975,081 | £13,823 | £126,709 |
2 | TermoDeck | £8,195,104 | £6,305 | £16,799 |
3 | Natural Ventilation | £7,852,695 | £8,442 | £50,276 |
Source: Gardiner & Theobald and Mott McDonald (2000)
Sweden:
A cost consultant compared the installation costs for three HVAC systems for an office
building in 2007.
Table 3: Capital Cost Comparison (Sweden)
Installation | TermoDeck (SEK/m2) | Conventional HVAC** (SEK/m2) | Chilled Beams (SEK/m2) |
---|---|---|---|
Central Cooling Plant | 145 | 235 | 165 |
Cooling to fan room | 39 | 57 | 24 |
Chilled Beams | - | - | 369 |
District Heating Central | 26 | 42 | 33 |
Heating to fan room | 38 | 38 | 31 |
Water Radiators | - | 172 | 172 |
AHU + Ductwork | 583 | 810 | 581 |
Controls | 190 | 216 | 354 |
Sum | 1 021 | 1 570 | 1 729 |
Difference to TermoDeck | - | 548 | 708 |
Building* 3 686 m2 Gross Area (kkr) | 3 763 | 5 787 | 6 373 |
Source: VVS-Ekonomen Bernt Svensson AB (2007). Installation Costs HVAC excluding design and VAT.
Prices in June 2007. All prices in Swedish kronor. 1 SEK = 9,45 Euro.
Four storey office building: 60 x 16,5 m
** Conventional HVAC: Mechanical ventilation & Air-Conditioning + water radiators