Minimal Monitoring of Improvements in Energy Performance after Envelope Renovation in Subsidized Single Family Housing in Madrid

Fernando Martín-Consuegra,Fernando de Frutos,Ignacio Oteiza,Borja Frutos,Carmen Alonso

doi:10.3390/su13010235

Abstract

This study quantified the improvement in energy efficiency following passive renovation of the thermal envelope in highly inefficient residential complexes on the outskirts of the city of Madrid. A case study was conducted of a single-family terrace housing, representative of the smallest size subsidized dwellings built in Spain for workers in the nineteen fifties and sixties. Two units of similar characteristics, one in its original state and the other renovated, were analyzed in detail against their urban setting with an experimental method proposed hereunder for simplified, minimal monitoring. The dwellings were compared on the grounds of indoor environment quality parameters recorded over a period covering both winter and summer months. That information was supplemented with an analysis of the energy consumption metered. The result was a low-cost, reasonably accurate measure of the improvements gained in the renovated unit. The monitoring output data were entered in a theoretical energy efficiency model for the entire neighborhood to obtain an estimate of the potential for energy savings if the entire urban complex were renovated.

Highlights

IntroductionEU Directive 844 requires countries to ‘establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings [ . . . ] into a highly energy efficient and decarbonized building stock by 20500 with the primary goal of hastening cost-effective building renovation [1,2,3]Each Member State shall establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings, both public and private, [ . . . ] facilitating the cost-effective transformation of existing buildings into nearly zero-energy buildings. (European Parliament and EU Council, 2010)The EU’s Green Deal [4] addresses building energy renovation as essential to reaching its decarbonization objectives, which include a clean and fair energy system for all citizens, to the exclusion of none
The findings for the two dwellings studied are described below, including the information collected with the surveys, the indoor environment monitoring records, and the energy consumption data metered
Substantial improvement in energy consumption was observed in the retrofitted dwelling, in particular as respects natural gas, which declined by 43%

Summary

Introduction

EU Directive 844 requires countries to ‘establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings [ . . . ] into a highly energy efficient and decarbonized building stock by 20500 with the primary goal of hastening cost-effective building renovation [1,2,3]Each Member State shall establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings, both public and private, [ . . . ] facilitating the cost-effective transformation of existing buildings into nearly zero-energy buildings. (European Parliament and EU Council, 2010)The EU’s Green Deal [4] addresses building energy renovation as essential to reaching its decarbonization objectives, which include a clean and fair energy system for all citizens, to the exclusion of none. EU Directive 844 requires countries to ‘establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings [ . ] into a highly energy efficient and decarbonized building stock by 20500 with the primary goal of hastening cost-effective building renovation [1,2,3]. Each Member State shall establish a long-term renovation strategy to support the renovation of the national stock of residential and non-residential buildings, both public and private, [ . Spain’s long-term strategy for building sector energy renovation Improvements on housing construction have a positive impact on comfort and health aspects [10,11].

Objectives

Methods

Results

Conclusion