Home
Contact Us

Design of WHRB

Product Features

Comparison

Industry Application

Product Installations
Heat Recovery Patents
Energy Saving Tips
 
 

Thermal Design of Heat Recovery

  • It is well known that Waste Heat Recovery System has large potential savings in fuel cost for the fired equipment. Payback period is very attractive.

  • Optimized thermal design (with economizer for Boilers) ensures maximum heat recovery from exhaust gases.

  • The heating surface of the system is provided with adequate margin for fouling on exhaust gas side. This ensures that heat recovery is not affected by soot accumulation on tubes within reasonable limits.

  • Waste Heat Recovery Systems are designed for pressure drop on exhaust gas side as per maximum permissible back pressure of source equipment. Adequate margin for rise in pressure drop in Waste Heat Recovery System due to soot accumulation is provided to prolong the time between two successive cleaning operations.  

 Safeties, Instrumentation and Controls		  

  • Waste Heat Recovery System is provided with bypass facility on gas side by Three way pneumatically operated diverter valve.

  • Following safety instruments are provided for safe and reliable operation of Waste Heat Recovery System as well as D.G. Set.

  
 
  1. High steam pressure (for Steam Boiler)
  2. High exhaust back pressure
  3. Low water level in boiler (for Steam Boiler)
  4. high Thermic fluid or Hot water temperature (for Waste Heat Recovery Thermic fluid heater & Waste heat recovery hot water generator respectively)
  5. Low flow of Thermic fluid or Hot water (for Steam Boiler)
 

  • Operation of any of the above safeties results in an alarm and bypass for exhaust gases by operation of diverter valve.

Mechanical Design & Construction

  • Waste Heat Recovery System has easy access for mechanical cleaning on flue side. 

  • The heating surfaces are also accessible for cleaning and inspection on water side (in case of smoke tube WHRB).

  • In case of Steam Boilers -

  
 

  1. Large steam space and steam release area ensure high quality of steam. Foaming, hunting of water level is totally eliminated. Due to this, boiler gives consistently dry steam under different load conditions. Additional moisture separator is provided to eliminate moisture in the steam.

  2. All tubes are stay tubes and are strength welded to tubesheet. Therefore, possibility of tubes weld leakage is avoided.

  3. Special design of removable water feed pipe. This ensures that no "Cyclic heating, cooling" stresses occur on the feed pipe welding on steam drum. It also improves access for cleaning the holes provided for uniform distribution 

  4. Uniform distribution of feed water in the boiler eliminates any "local" temperature gradients in the steam drum.
 

  • In case of Waste Heat Recovery Thermic Fluid Heater and Waste Heat Recovery Hot Water Generator. 

  
 
  1. Necessary velocities from Thermic Fluid or water side are kept to ensure turbulent flow eliminating boundary layer effect in case of Thermic Fluid.
  2. Systems are designed for optimum pressure drop from fluid side. 
 
  • Robust, easy to open and seal smoke boxes.
  • Factory insulated low heat loss smoke boxes.

  • Smoke box door clamping arrangement is robust and leakfree. Smoke boxes can be opened and closed within 5 minutes by one attendant.

  • Smoke box and its doors are insulated with rockwool rigid mattress to minimize radiation losses and doors are light weight.

  • Smoke box door hinges with lubrication nipple for smooth performance of hinges and free movements of doors.

  • Unit manufactured with documented Q.C. plan and inspection report.
  

@2003 Transparent Energy Systems Pvt. Ltd. All rights reserve
 Contact Transparent Energy Systems Pvt. Ltd.