Sentence examples for optimum payback from inspiring English sources

An optimum is observed: For low annual electrical production, the optimum payback period decreases sharply while for high annual electrical load, the optimal payback period slightly increases.

The optimum payback period results in a compromise between investment (better for small batteries) and annual revenues (better for large batteries).

It was found that for the optimum panel design the payback period is between 1.5 and 2.7 years, based on the current price for non-renewable energy sources.

The results show that the life cycle savings are overestimated by up to 44% in Method 2, while the optimum insulation thickness and payback period are respectively overestimated by up to 74% and 69% in Method 1.

As an outcome of the thermal and cost analysis, water based cold energy storage system with cooling capability to handle 60% of datacenter yearly heat load will provide an optimum system size with minimum payback period of 3.5 years.

The optimum insulation thickness, lifecycle saving and payback period are estimated.

Finally, 450 m2 of evacuated tube collectors with a 14 m3 storage tank was proved to be the optimum solution financially with 15 years payback period and 67 k€ net present value.

This model was used for predicting optimum insulation thickness, total cost, cost saving and payback period.

The proposed contour lines of economic returns also illustrate the optimum ranges for constructing potential PV projects with desirable payback periods during their lifetimes.

Comparison of CFFT results with those of sol air Degree-Hours (DH) shows that optimum insulation thickness and energy savings are overestimated and payback period is underestimated using the latter model.

Therefore, the present study is concerned with the determination of the optimum insulation thickness and the resulting energy savings and payback period for two typical roof structures and two types of insulation materials.