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241

Appendix G
Heat transfer characteristics of tubes
G1.1 GRAPHS OF VARYING HEAT MEDIUM TEMPERATURE

Figure G1. Variation of overall heat transfer coefficient with heat medium temperature
for corrugated tubes with variable corrugation pitch and depth.

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242 Figure G2. Variation of overall heat transfer coefficient with heat medium temperature
for smooth tubes with insertions. Figure G3. Variation of water production rate with heat medium temperature for
corrugated tubes with variable corrugation pitch and depth.

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243 Figure G4. Variation of performance ratio with heat medium temperature for corrugated
tubes with variable corrugation pitch and depth.

Figure G5. Variation of specific heat transfer area with heat medium temperature for
corrugated tubes with variable corrugation pitch and depth.

Figure G10. Variation of specific heat transfer area with heat medium flow rate for
corrugated tubes with variable corrugation pitch and depth.
G1.3 GRAPHS OF VARYING FEED TEMPERATURE

Figure G11. Variation of water production rate with feed temperature for corrugated
tubes with variable corrugation pitch and depth. ______________________________________________________________________________________
247 Figure G12. Variation of water production rate with feed temperature for smooth tubes. Figure G13. Variation of overall heat transfer coefficient with feed temperature for
corrugated tubes with variable corrugation pitch and depth. ______________________________________________________________________________________
248 Figure G14. Variation of overall heat transfer coefficient with feed temperature for
smooth tubes.

Figure G15. Variation of performance ratio with feed temperature for corrugated tubes
with variable corrugation pitch and depth.

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Figure G21. Variation of water production rate with feed flow rate for corrugated
tubes with variable corrugation pitch and depth.______________________________________________________________________________________
252 Figure G22. Variation of overall heat transfer coefficient with feed flow rate for
smooth tubes.

Figure G23. Variation of performance ratio with feed flow rate for corrugated
tubes with

variable corrugation pitch and depth.______________________________________________________________________________________
253
G1.5 GRAPHS OF VARYING CORRUGATION PITCH AND DEPTH

Figure G24. Variation of specific heat transfer area with feed flow rate for
corrugated tubes with variable corrugation pitch and depth.