Energy assessment of milk pasteurization in dairy plant

Abstract

Energy is critical component of dairy industry. Dairy industry depends on fossil fuels for energy supply. Energy conservation in dairy plant means to develop a methodology to achieve energy saving to reduce energy costs in processing system. The aim of experiment was to investigate average quantity of milk, electricity consumption in per day. The data was analyzed of November 2016, December 2016 and January 2017 for old alfa pasteurizer in Parag dairy Meerut. The highest average quantity of milk, electricity consumption and thermal energy in shift B of November was 520.17 kg, 17.36 (KW) and 144.08(KJ×10 3), respectively. The lowest average quantity of milk, electricity consumption and thermal energy in shift A of November was 14 kg, 0.47 (KW) and 3.88 (KJ×10 3). Followed by The highest average quantity of milk, electricity and thermal energy consumption in December was 224.80 kg, 7.50 (KW) and 62.0 (KJ×10 3) in shift B and the lowest collection of milk 14.04 kg, electricity consumption average 0.47 (KW) and thermal energy consumption 3.78 (KJ×10 3) in shift A of old alfa pasteurizer. Old alfa pasteurizer's highest average quantity of milk in January (2017), 111.78 kg, electricity consumption average was 3.73 (KW) and thermal energy consumption 31.07 (KJ×10 3) in shift B while lowest average collection of milk, electricity and thermal energy consumption was 42.26 kg, 1.41 (KW) and 11.79 (KJ×10 3) in shift C, respectively.

Nonthermal turbulent flow ultraviolet‐C (UV‐C) radiation processing for cheese whey‐brines purification

“…It was reported by Delorme et al 2020 that UV-C treatment can consume up to 10 000 times less energy compared to heat pasteurisation. A study on milk showed that a pasteuriser with a capacity of 20 000 L/h requires 3.78 kW of electricity to pasteurise 112 kg of milk (Singh et al 2019), while a UV-C system requires 0.196 kW per m 3 /log to kill Listeria monocytogenes (Ward et al 2018).…”

“…A study on milk showed that a pasteuriser with a capacity of 20 000 L/h requires 3.78 kW of electricity to pasteurise 112 kg of milk (Singh et al . 2019), while a UV‐C system requires 0.196 kW per m 3 /log to kill Listeria monocytogenes (Ward et al . 2018).…”

Thermal Energy Consumption Assessment in a Fluid Milk Plant

“…Dairy industry uses electrical energy and thermal energy as main energy source [7]. A lot of awareness has been generated in the conducting energy audits to achieve energy conservation [8]. Energy conservation will help to reduce the energy costs which will reduce the processing costs [9].…”