Engineering Please comment if u like.

1. Nikhil D. Nimbarte
Recovery of Waste Heat From Domestic LPG
A
PROJECT REPORT ON
Submitted by:-

2. Introduction
• This paper concentrates on the theoretical analysis of
production of hot water and reduction of LPG gas using
waste heat
• Energy saving is one of the key issues not only from the
view of energy conservation but also for the aegis of
global environment.

3. Waste heat
• While cooking some
amount of heat will be
dissipated to
atmosphere which can
be utilized for some
useful purpose.

4. Construction
Key elements:-
 Copper tube
Round coil( copper tube)
Extended links(with insulating)
Reservoir (Insulating tank) with closed
vessel.

5. Gas Frame Copper tube coil
ReservoirExtended Copper Link

6. Copper tube arrangement
Sectional front view
Top view

8. Impinging flame between radial flow burner Temperature Diagram
Copper tube
flam
e

9. Round coil( copper tube)
THERMAL
CONDUCTIVITY:-
K= 386 W/m-K @ O˚C
&
K=379 W/m-K @ 100˚C

10. construction
• Round coil( copper tube) introduce in
between the burner and cooking pot.
• Extended links (of tube)
• Insulating tank act as a reservoir
• contains cold water before process as well
as hot water after the process.

11. Working

12. S.F.V
Temp. dia

13. FIG;-FORMATION OF CONVECTION CURRENT
FIG;-MOLECULAR DISPALCEMENT FROM
HOT WATER TO COLD WATER

14. • Reservoir is placed on some height
• Extended links are filled with water
• Round coil absorbs wastage of heat
• Due to which water molecule present inside the
tube gets heated
• Again goes back to the reservoir
• Convection current set up
• Cycle is repeated again and again

15. ADVANTAGES
• Optimum utilization of resources
• To save conventional resources
• Multiple benefits

16. Reference
• Thermal engg. Textbook by R K. Rajput
• Heat and mass transfer Data Book
• Wkpdi on convection current

17. Thanking
you………