Economical viability analysis of an innovative gravity‐driven rainwater harvesting system for a commercial office building

Abstract

Gravity-driven rainwater harvesting (RWH) system showcases a promising alternative solution to reduce energy consumption in rainwater recycling. However, the economic efficiency is one of the most concerns with regard to the adoption of this green infrastructure. In this study, a commercial official building has a rooftop area of 1600 m 2 and with 560 inhabitants was assumed to apply two configurations of RWH

Economic Efficiency of Solar and Rainwater Systems—A Case Study

“…The cost of the Indian rainwater system is about 50% of the price of the Košice rainwater system. In a comparative economic efficiency study of two configurations of a rainwater system (gravity and pressure) in a commercial official building with a rooftop area of 1600 m 2 and with 560 persons in China, the total installation costs were about EUR 6000 for the pressure system and about EUR 4700 for the gravity system with a storage tank of 20 m 3 [58]. The cost of this system is also almost 50% of the price of the Košice system.…”