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.
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.
High-Performance HVAC | WBDG - Whole Buildin
2019-10-10 · Heating, ventilating, and air-conditioning (HVAC systems) account for 39% of the energy used in commercial buildings in the United States. Consequently, almost any business or government agency has the potential to realize significant savings by improving its control of HVAC operations and improving the efficiency of the system it uses.
Troubleshooting a Gas-Fired Hot Water Boiler - Th
A boiler is a bit more complex than a forced air furnace in that it has more parts, valves, and controls. However, gas-fired boilers are fairly reliable and, when problems do occur, they are usually related to the expansion tank or water circulation pump(s).
Variable Air Volume Systems - Commercial HVA
Variable Air Volume Systems - Variable Air Volume (VAV) systems are the best way to zone especially in large buildings. A VAV system with the proper controls and set-up will help the building owner realize large savings in energy usage.
Hot Water Heating Boiler Operation Details - 39 step
How does a heating boiler work - what are the steps in its operating sequence? This article describes how a hot water heating system (hydronic heat) actually works, step by step, to heat a building. An understading of the sequence of steps in the operation of a heating system, from the moment that a thermostat calls for heat until the moment that the thermostat stops calling for heat can help
Reheat Steam Cycle - an overview | ScienceDirect Topi
Eric Jeffs, in Generating Power At High Efficiency, 2008. In a normal three-pressure reheat steam cycle the intermediate-pressure output of the heat recovery boiler joins the returning cold reheat line from the steam turbine and the combined flow goes through the reheater. At low loads, below 20%, there is no steam flow through the transition pieces and all of the intermediate-pressure output
Energy-Saving Strategies for Water-Source Heat-Pum
2019-10-1 · energy-saving strategies for Water-Source Heat Pump Systems from the editor Water-source heat pump (WSHP) or adding a small boiler to a system in a heating-dominated climate. In either case, the geothermal heat exchanger is and then reheat it to approximately space temperature (neutral). However, when a chilled-
Large Commercial Buildings: Re-tuning for Efficien
2012-1-13 · Turn off heating systems (for reheat only) during summer When reheat system is shut off, room comfort may be maintained by increasing supply-air temperature – for constant volume units Do not turn heating off too early in the summer to avoid having to turn the system on and off repeatedly Turn off systems during unoccupied hours
Boiler systems: Economics and efficiencies - csemag.c
2012-6-19 · Normally a neutralization system should be added in the drain pipe to increase the pH of the condensate. The neutralization media should be periodically replaced as necessary. Figure 2 shows a heating system serving the air-handling unit's heating coils, variable air volume (VAV) reheat coils, and radiant heating panels.
Double-reheat cycles improve efficiency of coal-fire
The reheat loop requires additional boiler and turbine components, which raises capital costs, but savings are made in fuel consumption. In the late 1950s, a second reheat loop was introduced. This double-reheat has an electrical efficiency one to two percentage points greater than a single-reheat system.