298 South Road, Sheffield, S6 3TE tel: 0114 287 0723 email: sales@eesy.uk.com
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  Sheffield, S6 3TE
 
 
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If you like the idea of doing your bit for the environment, whilst enjoying the benefits, then pick up the phone or fill out the form on the contact page.

All our details along with a web form can be found on the contact page click here

Tel: 0114 287 0723
 
A woodburning stove with a back boiler can be docked to a Heat Pump
Bringing fire into your home in the form of a wood burning stove can be hugely rewarding, not only will it give your home character and serve as a focal point for any room but also as a means of providing heat for the whole building.

Wood burning stoves are brilliant, they too are considered to be a carbon neutral fuel because during its life time the wood will have consumed far more carbon than it will ever release when it is burnt.


If you’re a man you probably like making fire! It’s natural and it’s warm and there’s something hypnotic about it; man has made fire for centuries, think of it as ‘natures TV’.

Wood burners convert wood (which is often free from the environment around us) into heat for our homes. The only problem with them is that the heat generated is generally confined to the particular room or section of the house the wood burning stove is in. They also have little in the form of temperature control which can result in overheating in that room.

With some cleaver design we are able to overcome these problems; by docking the burner with your heat pump system we are able to harness all the energy created by the stove and transfer the heat around the house where it is wanted, this will in turn help to keep the room it is situated in from overheating.

The diagram below shows a heat pump and thermal store system docked with solar thermal panels and a wood burning stove. This is a very clever and efficient way of heating your home.

About the heat pump - wood burning stove - solar thermal system
Because this is a vented system and not pressurised the store is safe to use with a wood burning stove

Energy put into the store from whatever source can be used for both heating and hot water

There is no requirement for a pressure and temperature relief valve, there is therefore no need to design safe discharge facilities into the property

A thermal store can operate with less “on-peak” top up than an unvented cylinder when heat pumps are used as the main energy input.

As we require energy to meet the demand of the house a larger stove can be used than if we were just heating a room. This means you can use bigger, longer logs which means less time spent processing and moving your wood and more time enjoying the fire!



Super cheap and super efficient
The only heat source in this system that requires electricity (apart from the minimal amount used by the pump in the solar thermal circuit) is the heat pump

Add Solar PV and we can create a totally free system

 
 

Efficiency explained

All the components within this system complement each other, think of the thermal store as a battery of charged, heated water. All day long the solar thermal panels are at work circulating their warm energy from the panels to the store, constantly charging up the cylinder and contributing to the system. This leaves the heat pump with less work to do and hence less electricity consumed. As night time falls the solar thermal panels will stop contributing until next light.
This is where the turn of the wood burning stove comes in; as the stove is fired up (as it generally is during the evening) it takes over from the solar thermal panels and it too begins to contribute towards charging the cylinder and in turn relieving the heat pump of its duties.

While it can be said that it is unlikely that both the wood burner and the solar thermal panels will produce enough energy to heat the whole house all the time we can be sure that while ever they are working, they are contributing to the efficiency levels of the heat pump.

This results in not only less running time for the heat pump, but also in less electricity consumed when the heat pump is running.
Assuming that the wood burning stove is used at evening to night time; the fact that the two auxiliary heat sources of the solar thermal and the stove generally produce their heat at different times means that the store is constantly receiving energy and charge.
Clever controls within the heat pump mean that the heat pump knows in real time what energy is being produced where and at what temperature the store is. From this information combined with heat pump’s knowledge of indoor and outdoor temperature through wired sensors known as weather compensating control your heat pump will switch on and off automatically to maintain your whole house at a comfortable temperature. It will also control valves and pumps throughout the system delivering energy when it is available from the auxiliary sources to the store and energy from its self when it is required to kick in.
The outgoing side of the thermal store is connected to the central heating system or underfloor heating system which delivers the heat to the rest of the house.

Underfloor heating zone valves within the manifold and thermostatic radiator valves further increase efficiency of the system by blocking the heat to rooms that are not used where the heat is not required and would only be wasted.
Energy for hot water is also taken from the central thermal store via a mains pressure connection to an internal coil or an external heat exchanger.

This is fantastic as it enables us to produce mains pressure hot water to a high number of outlets (taps and showers) simultaneously (not forgetting flow regulators.)

We also dispel any chance of legionella as we are not storing any quantity of potable water.


 
 


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