Sep 2026· Energy· pp. 1-14· 0 citations· 45 references
Abstract
The study assessed changes in energy, temporal, technological, environmental, and washing-quality parameters after introducing a central heat recovery system in an industrial laundry. Instrumental measurements, gravimetric and microbiological methods, textile mechanical testing, and calculations of energy-efficiency and carbon dioxide (CO2)-emission indicators were applied. Specific heat energy consumption decreased from 7.8 to 4.6 kWh/kg, while heat energy use for 100 t of laundry fell from 780 to 460 MWh. Recovered heat supplied 42% of the total heat demand, reducing steam-boiler load from 100% to 72% and shortening the washing cycle from 35 to 30 min. Washing-tunnel performance increased from 1000 to 1200 kg/h, and completed cycles per shift increased from 13 to 16. Annual natural gas consumption decreased from 430 to 300 thousand m³, and specific carbon dioxide emissions from 62 to 42 kg/t. Average moisture after drying declined from 6.5% to 4.8%, while laundry ready for folding increased from 78% to 92%. Protein- and fat-contaminant removal and whiteness also improved. A separate ozonation test increased microbial reduction but was not attributed to heat recovery. The integral energy efficiency index increased from 1.00 to 2.03.
In recent years, improving the energy efficiency of household appliances has become increasingly important due to rising energy costs and growing concerns about environmental sustainability. This study presents the use of waste heat recovery in a domestic laundry washing machine as a practical approach to reducing ener...
Douline Othusitse, Lentlhabetse Budzani, K. Rabasoma· Clean Energy Science and Tec...· 0 citations
The wastewater generated during showering represents a potential source of low-grade thermal energy that can be utilised to reduce the energy required for domestic water heating. This paper presents an experimental investigation of a shower wastewater heat recovery system in laboratory conditions. Measurements were car...
Lucia Hrnčárová, J. Peráčková· Acta Polytechnica· 0 citations
Triethylene glycol (TEG) dehydration systems frequently suffer from high energy consumption due to localized thermal inefficiencies. This study proposes an integrated retrofitting framework for a practical TEG unit in Southwest China, physically capturing and repurposing waste heat from both overhead vapor and rebo...
The growing demand for renewable and low-carbon energy has intensified the exploration of biomass residues as alternatives to fossil fuels. Palm shell, an abundant by-product of the palm oil industry, has favorable fixed carbon content and calorific properties for thermochemical conversion through gasification. However...
Dede Iman Saputra, Novandri Tri Setioputro, W. Basuki et al.· Jurnal POLIMESIN· 0 citations
This study evaluated the feasibility of a scaled-down, renewable-energy-powered hydrogen generation system for domestic cooking. The proposed system integrated solar-powered electrolysis, electrolyte circulation, hydrogen separation, compression, storage, and burner delivery. Design calculations were based on the state...
Quadri Nasiru, T. Mogaji, A. E. Ajayi et al.· Journal of Energy Research a...· 0 citations
This study focuses on the experimental evaluation of the effect of heat accumulation on the course of heat output of wood-burning stoves using wood logs. The motivation comes from the unstable nature of batch combustion, which leads to significant fluctuations in heat supply and a related decrease in thermal comfort. T...
Matyáš Trač, Miroslav Jaroch, Martin Chmelar et al.· Discover Energy· 0 citations
A new machine-learning framework aims to improve the success rate of computational protein design while moving away from results that reproduce sequences found in nature.
