SAV LoadTracker combined heat and power (CHP) units are designed to address the key issues that constrain the performance and viability of conventional ‘fixed output’ CHP, thereby supporting system design in line with best practice. Because of LoadTracker’s optimisation capabilities, it can be heat or power led and can be configured with other ‘renewable’ sources such as heat pumps to provide a complete system design incorporating low carbon technologies.
Optimising the delta T and providing a low return temperature also supports requirements to limit heat losses from pipework and across the heating and hot water system.
The Building Regulations 2013 – relating to dwellings and non-dwellings – state that: “Before construction of a new building starts the person who is to carry out the work must analyse and take into account the technical, environmental and economic feasibility of using high-efficiency alternative systems …”
The ‘energy-efficient alternatives’ listed in the Building Regulations include cogeneration and district heating. SAV LoadTracker CHP units underpin the feasibility of CHP for such projects through the following performance characteristics:
The benefits of old style fixed output CHPs are severely constrained by their limited ability to respond to variable demand, thus shortening run-times.
In contrast, LoadTracker units continually track electrical demand and modulate their output accordingly so the CHP runs for longer and dependence on expensive mains electricity is minimised.
To further optimise CHP operating times any surplus heat is stored in our Storemaster thermal store. Storemaster stores are equipped with internal diffusers to maintain stratification between (high) flow and (low) return water temperature, thus maximising the storage capacity in an efficient way.
Maintaining constant flow temperatures
LoadTracker CHP units also incorporate a patented heat distributor that maintains a constant flow temperature irrespective of return water temperature, corresponding to the design flow temperature.
The result is high grade heat at 80 degrees C flow with minimum use of back-up boilers, while supporting compliance with CIBSE AM12/2013 Combined Heat and Power for Buildings.
Consequently, LoadTracker CHP delivers the following key benefits:
- Optimised heat and power to match site requirements
- Freedom from the constraints imposed by conventional fixed-output CHP.
- Run times are maximised by modulating in line with electrical demand.
- Constant flow temperatures and high grade heat at all times.
- Highly responsive hot water supply for space heating and DHW.
- Energy savings are optimised.
- Carbon emissions are minimised.
- Optimum design/specification facilitated by cascade (modular) functionality.
- Use of back-up boiler plant minimised.
Find out more about how SAV’s CHP Group can help with Building Regulations compliance
SAV LoadTracker CHP units are available in capacities from 6 kWe/12.2 kWth to 20 kWe/38.7 kWth. They can be used in modular configurations of up to 5 units to provide a total range of 6-100 kW(e) and 12.2 – 193.5 kW(th).