**7.1. The solar system description**

The air-conditioning absorption solar system (*ACASS*) considered for this study is installed as a prototype on the Research Center in Engineering and Applied Sciences (CIICAp) of the Autonomous University of the State of Morelos (UAEM), located in Cuernavaca, Mexico, with a warm subhumid climate. In this place, March, April, and May are the warmest months during the year, thus the required demand of air-conditioning increases, with an average per day solar radiation of 7.31, 6.85, and 6.16 kWh/m<sup>2</sup> , respectively [54].

The capacity of *ACASS* installed is 17.6 kW such as providing air-conditioning for five offices. The design temperature average was proposed around 23°C, which is considered the comfort temperature. The system will be employed from Monday to Friday, during March to May, with a schedule from 11:00 to 16:00.

A plant of cylindrical-parabolic collectors that generate 26.44 kW was installed to drive the cycle, and 12 photovoltaic panels have been coupled to ACASS to generate 1.89 kW and supply electrical energy to the auxiliary devices that require it, covering 98.9% of the demand. Twenty-five years was considered as the useful period, according to the literature review [55].
