考虑到巴西圣保罗市的气候，空调系统是建筑的一大能耗，约占商业建筑总能耗的30%。采用使用替代供应源的空调系统可以大大降低能源成本，考虑到目前巴西的能源情况，使用天然气源技术可能是有利的。在办公楼中，如果与传统电气系统相比，使用燃气热泵空调系统可以以更低的成本满足热负荷，其优点是减少整个建筑的能源需求，主要是因为- 峰值能源率，并考虑减少电力基础设施。考虑到这些问题，本研究的目的是从技术上研究将现有办公楼的传统电动空调系统改造为燃气热泵系统。提出并分析了圣保罗市具有改造潜力的运营办公楼的数据集合，并在现有办公楼中开发了一个代表性案例研究，使用计算机模拟来评估拟建系统与现有系统的能源性能。结果表明，考虑到本研究所采用的参数，16.7%的数据汇编在空调系统改造方面具有技术可行性。 具体案例研究展示了将空调系统的能源从电力转换为天然气的优势产出，显示GHP情景下的年能源节约成本为30.3%，年耗电量减少38%/p> 引用:2017年年度会议，加利福尼亚州长滩，会议论文

The air-conditioning system is a big energy consumer of buildings, representing around 30% of total energy consumption on commercial buildings, considering the climate of the city of Sao Paulo, Brazil. The adoption of air-conditioning systems that use alternative sources of supply can contribute significantly on energy costs reduction and, considering the current Brazilian energy scenario, the use of natural gas source technologies could be advantageous. In office buildings, the use of a Gas Heat Pump air-conditioning system may enable to meet thermal loads with reduced costs, if compared to a conventional electrical system, with the advantage of reducing the energy demand of the whole building, mainly due to on-peak energy rates and considering reduction on electric infrastructure. Considering those issues, the purpose of this study was to technically investigate the retrofit of a conventional electric air-conditioning system of an existing office building to a Gas Heat Pump system. A data assembling of operating office buildings in the city of Sao Paulo with potential for retrofit was raised and analysed, and a representative case study in an existing office building was developed, using computer simulation to evaluate energy performance of the proposed system versus the existing system. Results show that 16.7% of the data assembling have technical feasibility on performing a retrofit of the air-conditioning system, considering parameters adopted in this study. The specific case study presented an advantageous output on trading the energy source of the air-conditioning system from electricity to natural gas, showing annual energy savings of 30.3% in cost for GHP Scenario, with a 38% reduction in annual electricity consumption./p>