gas boiler energy saving water temperature

What is the correct temp setting for a hot water boiler ...

Dec 13 2006 · If you set your boiler operating temperature below that for extended periods the flue gasses will condense form acidic deposits and eat the boiler. So one must spend energy to maintain temperatures higher than that. By this it means that your range of setting the boiler down when it gets warmer out is between say 180 and 140. (Yawn.)

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Boiler Efficiency and Combustion | Spirax Sarco

A reasonably well-insulated shell or water-tube boiler of 5 MW or more will lose between 0.3 and 0.5% of its energy to the surroundings. This may not appear to be a large amount but it must be remembered that this is 0.3 to 0.5% of the boilers full-load rating and this loss will remain constant even if the boiler is not exporting steam to ...

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Boiler energy saving tips Tip 007 Reduce Stack gas ...

Oct 02 2018 · Boiler energy saving tips Tip 007 Reduce Stack gas temperature 1. Summary Sending a cold water to your boiler is not an energy efficient act so hot flue gases can be utilized for preheating boiler feed water via economizer to reduce your fuel consumption and operation cost All the industrial sectors are affected by the increasing

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About Energy Kinetics Boilers - engineeredheatingsystems

Energy Kinetics boilers have a one-piece steel combustion chamber that is not susceptible to this type of thermal shock damage. Furthermore the digital manager that is included with the Energy Kinetics product will stop the circulator from returning cold water to the boiler and heat it to prevent condensation in the combustion chamber.

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How to Use a Combi Boiler Efficiently | Viessmann

Many new gas condensing combi boilers will come with an efficiency rating of up to 98 per cent. This could decrease over time but is higher on average than the efficiency rating of a conventional system. A combi boiler will heat the water only when its needed helping to minimise wastage.

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gas boiler exhaust loss energy-saving technology

gas boiler exhaust energy-saving transformation. What are the energy saving technologies of boiler. The condensing waste heat recovery boiler reduces the exhaust gas temperature to 50~70 and fully recovers the sensible heat and condensation latent heat of water vapor in the flue gas improves the thermal efficiency.

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Hot water heater: the most energy-efficient water heating ...

Hot water accounts for around 10% of the average energy bill. It's not something most of us would want to do without so use this guide to find energy-efficient ways of getting your hot water and ...

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What's the best temperature for a condensing boiler to be ...

Jan 22 2019 · For the best energy savings a thermostat and boiler that can use OpenTherm will work best as this lets the thermostat adjust (modulate) the water temperature for the best results.

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Saving Energy While Heating Water With A Tankless Water Heater

Jul 01 2019 · Residential gas tankless water heaters have energy outputs from 120000 BTU to a high of 199000 BTU. Stiebel Eltron says their largest residential electric tankless water heater is 125000 BTU.

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Heating Commercial Buildings - Madison Gas and Electric ...

Changing to a condensing boiler is not as easy. Just replacing a non-condensing boiler with a condensing boiler does not usually provide energy efficient operation. Condensing boilers only provide the expected comfort and energy savings if the temperature of the water returning to the boiler

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Boiler Efficiency - an overview | ScienceDirect Topics

The improvement in the boiler efficiency depends on the flue gas temperature. Use economizers to transfer energy from stack flue gases to incoming feedwater. As a rule of thumb a 1% increase in the boiler efficiency is expected for each 5°C (9°F) increase in the feedwater temperature.

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Consulting - Specifying Engineer | Saving energy in water ...

Jul 18 2012 · Though condensing type boilers can achieve very high energy efficiencies the approach temperature difference for the heat exchangers results in a reduction in efficiency of approximately 5% to 12% when generating domestic hot water depending upon the heat exchanger type used (based upon 2 to 5 F approach with a 40 F T for ).

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Water Heating Controls - Madison Gas and Electric ...

If you have a hot water boiler or a steam boiler with a steam-to-hot-water heat exchanger automatic hot water reset and boiler cutout controls automatically set your heating requirements and save energy. For example. If the outside air is 0°F your supply water may need to be heated to 180°F.

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Gas-Fired Boilers | Building America Solution Center

The lowest efficiency boilers are atmospherically vented Category I boilers. A Category I boiler operates with the flue at negative pressure with respect to the combustion appliance zone (CAZ) i.e. the room in which the boiler is located and the stack

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