This section provides details of an example project featuring a cascaded ground source heat pump system fed by a slinky ground array.
We have provided schematic drawings, example costs and a real-life case study to showcase how a cascaded ground source heat pump system architecture designed by Kensa can effectively meet a high commercial heating and hot water load.
For more information, call sales on 0845 680 4328.
*For illustrative purposes only
|System architecture||Cascaded central plant|
|Total heat pump capacity||120kW|
|Equipment type||3x 45kW Plant Rooms|
|Potable DHW temp||Space heating only|
|Integral immersion heaters||No (DNO friendly)|
|Ground array type||Slinkies|
|Slinkies required||x24, plus header pipework|
|Land area required||6000sq/m|
*A cost range is depicted here as every project is different and can contain more design features than shown in this example
**Installation costs for external kit only (costs to install internals equivalent to a traditional system)
***NDRHI is a 20 year index linked funding stream which assumes inflation at 3%
****Based on electric at 15p/kW/hr and COP of 3
*****Based on LPG at 40p litre and 85% efficiency
Case study: Hornsea Garden Centre
Hornsea Garden Centre near Hull has three Kensa Plantroom heat pumps installed in a cascaded system to provide heating and hot water to a large new-build extension with 30,000 sq ft of retail space and a café kitchen.
- New-build extension providing 30,000 sq ft of retail space;
- Main building upgraded to underfloor heating;
- Cascaded Plantroom system;
- 2x 45kW Plantroom Heat Pump providing space heating;
- 1x 25kW High Temperature Twin Compact Heat Pump providing hot water;
- 24x 50m slinkies located under nearby field;
- System contains 7250 litres of water and 1450 litres of antifreeze.