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Welcome to ZOZEN

ZOZEN is one of the best modern boiler manufacturers in China, our products include steam boilers, hot water boilers and thermal oil heaters. ZOZEN boiler is located in Wuxi, covers 150 thousand square meters of production area, equipped with first-class production equipment, passed the ISO9001:2000 international quality system certification. The company gained the " S " and " U " steel seal from ASME of US.

Customer service

If you run into any problems with the boiler, please contact us directly by email or fill out the online service request. We will do our best to resolve any problems you might have within 24 hours.

In case of special condition, ZOZEN will forward your request to one of its partnered sales representatives depending on the country and state. The local maintenance personnel will arrive at the customer site as soon as possible.


Table 4a: Heating system seasonal efficiency (space an

2007-10-3 · Table 4a: Heating system seasonal efficiency (space and water) 1. The table shows space heating efficiency. The same efficiency applies for water heating when hot water is supplied from a boiler system. 2. For independent water heaters see section at the end of table. 3. 'Heating type' refers to the appropriate column in Table 8. 4.

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EASY TO COMMISSION, SERVICE EZ-FIT FLUE SYSTEM

2015-2-25 · install a more efficient central heating boiler. Older oil-fired boilers, designed at a time when very little consideration was given to environmental issues, can operate with efficiency levels as low as 65%. A modern oil-fired condensing boiler, like the Grant Vortex, has been tested and approved to operate at very high efficiency levels

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Benjamin Heating :: OB1000 & OB2000 High Efficienc

OB1000 & OB2000 High Efficiency Oil Fired Boilers. Up to 87% seasonal efficiency. Wet leg design to ensure maximum efficiency and reduce heat loss. Aquastat mounted in coil plate to speed domestic water response times. Large variety of venting options.

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Boiler Efficiency - Engineering ToolB

2019-10-4 · Boiler efficiency may be indicated by. Combustion Efficiency - indicates a burners ability to burn fuel measured by unburned fuel and excess air in the exhaust; Thermal Efficiency - indicates the heat exchangers effectiveness to transfer heat from the combustion process to the water or steam in the boiler, exclusive radiation and convection losses; Fuel to Fluid Efficiency - indicates the

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Furnaces and Boilers | Department of Ener

Upgrading to a high efficiency furnace or boiler is an effective way to save money on home heating. Most U.S. homes are heated with either furnaces or boilers. Furnaces heat air and distribute the heated air through the house using ducts. Boilers heat water, and provide either hot water or steam for heating. Oil-Fired Furnaces and Boilers.

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6.6.3 Minimum Provision for New Systems in New Dwellin

2014-4-10 · 6.7.3 Minimum Provision for New Systems in New and Existing Efficiency is required for oil fired boilers: • Minimum Oil Boiler Seasonal Efficiency = 82% for any individual boiler • Minimum Oil Boiler Seasonal Efficiency = 84% for the overall multi-boiler system

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Vortex Pro: Internal | Grant

Unlike traditional oil-fired boilers the Grant Vortex condensing boiler has a built-in stainless steel heat exchanger incorporating our unique turbulator baffle system which cools the gases to a point where the latent heat, normally lost to the atmosphere through the flue, can be usefully extracted.

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Table 4a: Heating system seasonal efficiency (space an

2007-10-3 · Table 4a: Heating system seasonal efficiency (space and water) 1. The table shows space heating efficiency. The same efficiency applies for water heating when hot water is supplied from a boiler system. 2. For independent water heaters see section at the end of table. 3. 'Heating type' refers to the appropriate column in Table 8. 4.

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Residential Heat Best Practices I Furnaces and Boile

2016-5-16 · Residential Heat Best Practices I Furnaces and Boilers Skip Hayden Seasonal or Annual Fuel Utilization Efficiency (AFUE) This is a cumulative (average) efficiency of a Condensing Oil-fired Boiler High efficiency possible by recovering latent heat from water vapour in flue gas.

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Experimental evaluation of seasonal efficiency o

Energy and Buildings, 14 (1990) 237 - 241 237 Experimental Evaluation of Seasonal Efficiency of Condensing Boilers LORENZO ROSA and RENZO TOSATO Department of Mechanical Engineering, University of Padova, Via Venezia, 1 - 135131 Padua (Italy) ABSTRACT The proposed simplified method assumes that the seasonal efficiency of a boiler is equal to the cyclical efficiency when calculated at

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Oil-fired and solar thermal - Feeltheheat

2012-10-2 · Oil-fired and solar thermal heating and hot water solutions Worcester Greenstar oil-fired product range Our market-leading Greenstar condensing oil-fired boilers are part of the total system solutions package we offer. With a state-of-the-art training facility and Seasonal efficiency is given as the SEDBUK number. The value is used

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