Comparative Study of Solar and Sun Drying of Fish in Ecuator (NRI) Appendices Appendix 1: Solar dryers Appendix 2: Operating conditions Appendix 3: Drying performance Appendix 4: Final product analysis Appendix 5: Material costs of rack and solar dryers

Comparative Study of Solar and Sun Drying of Fish in Ecuator (NRI)

Appendices

Appendix 1: Solar dryers

Figure 1 - Solar tent dryer

Figure 2 - SCD solar dryer

Figure 3 - Solar cabinet dryer

Appendix 2: Operating conditions

Table 1 - Summary of drying conditions

Figure 4 - Insolation and temperature variation during day with high total insolation (20 April)

Figure 5 - Insolation and temperature variation during day with low total insolation (29 April)

Appendix 3: Drying performance

Figure 6 - Drying curves for experiment 1: dry salted split lisa

Figure 7 - Drying curves for experiment 2: dry salted split lisa

Figure 8 - Drying curves for experiment 3: brined split pampano

Figure 9 - Drying curves for experiment 4: brined pampano fillets

Figure 10 - Drying curves for experiment 5: brined split lisa

Figure 11 - Drying curves for experiment 7: brined split lisa

Figure 12 - Drying curves for experiment 9: dry salted lisa fillets

Figure 13 - Drying curves for experiment 10: dry salted lisa fillets

Figure 14 - Generalised drying curves

Note

Although the moisture content of the prepared fish was not measured prior to drying, it would be expected to be approximately 55 - 65% for dry salted lisa, and 65 - 75% for brined lisa and brined pampano.

Table 2 - Experiment 1: drying times for dry salted split lisa

Table 3 - Experiment 2: drying times for dry salted split lisa

Table 4 - Experiment 3: drying times for brined split pampano

Table 5 - Experiment 4: drying times for brined pampano fillets

Table 6 - Experiment 5: drying times for brined split lisa

Table 7 - Experiment 7: drying times for brined split lisa

Table 8 - Experiment 9: drying times for dry salted lisa fillets

Table 9 - Experiment 10: drying times for dry salted lisa fillets

Table 10 - Relative performance of solar dryers and sun-drying methods

Appendix 4: Final product analysis

Table 11. Moisture, salt and acid-insoluble ash contents of final dried salted products*

* Salt and moisture contents are calculated on a wet weight basis while acid-insoluble ash contents are on a dry weight basis. Results given are mean values of analyses on either four split fish or eight fillets

Appendix 5: Material costs of rack and solar dryers

Rack	Sucres
4 of 4 m bamboo poles	220
1.2 m x 1.0 m black plastic mesh	324
String, nails, staples, etc.	50
594
+ 10% contingency	59
Material cost of rack	653

Solar tent dryer	Sucres
12 of 4 m bamboo poles	660
3 m x 2 m black PVC sheet	189
12 m x 2 m clear polyethylene sheet	630
1.2 m x 1.0 m black plastic mesh	324
String, nails, staples, etc.	100
1,903
+ 10% contingency	190
Material cost of tent dryer	2,093

SCD solar dryer	Sucres
15 of 4 m bamboo poles	825
6 m x 2 m black PVC sheet	378
8 m x 2 m clear polyethylene sheet	420
1.2 m x 1.0 m black plastic mesh	324
String, nails, staples, etc.	100
2,047
+ 10% contingency	205
Material cost of SCD dryer	2,252

Solar cabinet dryer	Sucres
2 sheets of plywood (12-ply)	1,200
2 sheets of plywood (5-ply)	520
15 m of 50 m x 50 mm wood	450
8 m of 25 m x 25 mm wood	80
1.2 m x 1.0 m black plastic mesh	324
1 m x 2 m clear polyethylene sheet	53
Nails, staples, webbing, hose, paint, etc.	200
2,827
+ 10% contingency	283
Material cost of cabinet dryer	3,110