Claim Missing Document
Check
Articles

Found 2 Documents
Search

Sustainability Policy in a New Autonomous City: Evidence of Economic Structure and Determinants from Banjar Municipality, Indonesia Supriyadi, Agus; Wang, Tao; Safitri, Susi; Cirella, Giuseppe T; Juwita, Melda R
Indonesian Journal of Sustainability Accounting and Management Vol 5, No 1 (2021): June 2021 Article-in-Press
Publisher : Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28992/ijsam.v5i1.228

Abstract

With a governance shift in Indonesia, a heavy burden has been placed on local governments to act in their citizens’ best interests. This study generated evidence of economic structure, economic growth, and local government policies in the new autonomous city of Banjar Municipality, West Java Province, Indonesia. This study used location quotient, shift-share, and ordinary least squares regression analyses. Results reveal that from 2017 to 2019, agriculture, accommodations, business and trade, public services, and other sectors dominated the economic structure of Banjar Municipality. Notably, the Banjar city government's sustainability policy, aimed at developing local road infrastructure and protecting traditional markets, plays an essential role in maintaining the city’s economic growth. Policies oriented toward sustainability emphasize control, orderliness, and acceleration of economic activity; however, local authorities are at times faced with challenges when a transition of regional leadership occurs. This study provides critical insights that complement the theorization and evaluation of new autonomous cities' attempts to achieve community welfare.
Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling Zhang, Wei; Yang, Xianzhao; Wang, Tao; Peng, Xueyuan; Wang, Xiaolin
Civil Engineering Journal Vol 5, No 10 (2019): October
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/cej-2019-03091411

Abstract

In this paper, the performance of a gas engine-driven heat pump (GEHP) was experimentally studied for space heating and cooling. An experimental test facility was developed for this purpose. The effect of key parameters on system performance was investigated under both cooling and heating modes. The results showed that as the engine speed increased from 1400 to 2000 rpm, the cooling and heating capacities increased by 23% and 28.5%, respectively while the GEHP system Primary Energy Ratio (PER) decreased by 13.5% and 11.7% in the cooling and heating modes, respectively. The system PER in the cooling mode was found lower than that in the heating mode. This indicated that heat recovery from the engine cylinder and exhaust gas was very important for improving the GEHP system performance. In the heating mode, the ambient temperature and condenser water flow rate had a large effect on the system heating capacity and PER, and insignificant effect on the gas energy input. In the cooling mode, the chilled water inlet temperature showed a large effect on both cooling capacity and gas energy input while the chilled water flow rate had a large effect on cooling capacity and insignificant effect on the gas energy input.