*7.3.3. Phase 3: life cycle environmental impact assessment*

LCA software is used at this phase for assessing the environmental impact of the systems. In this case, SimaProTM PhD 8.3.0.3 is used for the case study. The assessment method considered in this analysis is the Intergovernmental Panel on Climate Change (IPCC) 2007 GWP 100 years, which only includes the impact category of global warming potential (GWP).

air-conditioning systems. The operation stage of the CAC system presents the highest CO2

**Construction Operation Construction**

During the construction stage, ACASS presents 14.05% higher CO<sup>2</sup>

 **ACASS**

27.57

option for mitigating the environmental impacts related to global warming.

analysis is carried out considering 25 years of air-conditioning.

5.37% of the emissions at this stage.

%

**Figure 9.** Percentage of CO2

technologies.

systems.

**8. Parameterized cost**

emissions due to consumption of fossil fuel energy, while the ACASS system emits only

**SYSTEM Stage** 

eq emissions at each life cycle stage for both air-conditioning systems.

5.37 13.52

system. This is attributed mainly to the difference in infrastructure demand for the construction of each system, and ACASS demands 79.20% more than CAC. It is important to note that the

According to the results, it can be concluded that the ACASS system reduces greenhouse gas emissions due to lower consumption of fossil fuel energy. Therefore, for geographical regions where enough solar energy is available, the implementation of ACASS systems is a viable

The high initial investment of the ACASS system might represent a barrier for its market, but it is necessary to continue working on the improvement of this type of systems, leading toward a massive production and aiming to reduce costs. As well, the intervention of decision makers is relevant to facilitate and incentivize the development of this kind of clean

Energy devices are expensive caused for the bin number of small parts to become a single product. In the air-conditioning systems, the parts for a roof device are based on three sec-

Population in general has no money for investment for the energy consumption for the next 20 years to pay now. Then financial is the key for the installation for renewable energy

tions: solar concentrators, thermodynamic cycle part, and auxiliary system part.

eq

61

eq emissions than the CAC

**Operation**

100.00

http://dx.doi.org/10.5772/intechopen.72188

**CAC**

Design and Construction for Hydroxides Based Air Conditioning System with Solar Collectors…

#### *7.3.4. Phase 4: interpretation*

A summary of the results and the corresponding discussion are carried out, and the final conclusions and recommendations are produced according to the results. In **Figure 8**, the ACASS system presents a reduction in CO2 e emissions of 77.34% compared with the CAC system, during the analyzed life cycle stages. In addition, employing the ACASS system also contributes to mitigate the environmental impacts due to the use of renewable solar energy. **Figure 9** shows the percentage of CO2 eq emissions at each life cycle stage for both

**Figure 8.** Total percentage of CO2 e emissions for the ACASS system compared against the CAS system at the stages of construction and operation.

Design and Construction for Hydroxides Based Air Conditioning System with Solar Collectors… http://dx.doi.org/10.5772/intechopen.72188 61

**Figure 9.** Percentage of CO2 eq emissions at each life cycle stage for both air-conditioning systems.

air-conditioning systems. The operation stage of the CAC system presents the highest CO2 eq emissions due to consumption of fossil fuel energy, while the ACASS system emits only 5.37% of the emissions at this stage.

During the construction stage, ACASS presents 14.05% higher CO<sup>2</sup> eq emissions than the CAC system. This is attributed mainly to the difference in infrastructure demand for the construction of each system, and ACASS demands 79.20% more than CAC. It is important to note that the analysis is carried out considering 25 years of air-conditioning.

According to the results, it can be concluded that the ACASS system reduces greenhouse gas emissions due to lower consumption of fossil fuel energy. Therefore, for geographical regions where enough solar energy is available, the implementation of ACASS systems is a viable option for mitigating the environmental impacts related to global warming.

The high initial investment of the ACASS system might represent a barrier for its market, but it is necessary to continue working on the improvement of this type of systems, leading toward a massive production and aiming to reduce costs. As well, the intervention of decision makers is relevant to facilitate and incentivize the development of this kind of clean technologies.
