**4. Concluding remarks**

An innovative indirect evaporative cooler is developed and tested experimentally. The proposed design is aimed to resolve the critical issues from manufacturing and operational viewpoints. The salient features of the proposed system are simple construction, low manufacturing, less maintenance, high operational reliability, and competitive cooling performance. The major outcomes of the study are summarized below.

• The system showed stable performance by cooling the product air to 25 � 0.5°C from an outer air temperature of 45 � 0.5°C.

*Advancements in Indirect Evaporative Cooling Systems through Novel Operational… DOI: http://dx.doi.org/10.5772/intechopen.107305*


Overall, the system showed promising performance with a maximum temperature drop of 14°C, a maximum cooling capacity of 110 W, and a maximum cooling performance index of 43°C. Meanwhile, the system supplied product air within the ASHRAE comfortable range for all the considered operational conditions. In addition to competitive performance, the system also addressed the limitations of the conventional systems through rearrangement and retrofitting of the component. Therefore, the proposed system can be a lucrative option for industrial-scale expansion of indirect evaporative coolers.
