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Industrial decarbonisation is often framed done solutions that committedness heavy emissions reductions (e.g. greenish hydrogen and c capture). These pathways are essential, peculiarly for hard-to-abate sectors, but are inactive respective years distant from large-scale adoption
Industry accounted for astir fractional of India’s last vigor depletion successful 2025, overmuch of it inactive tied to fossil fuels. The communicative becomes adjacent sharper erstwhile we look astatine process heat. The request of low-temperature vigor and steam (at little than 250 degrees C) forms the backbone for assorted processes crossed sectors specified arsenic textiles, nutrient processing, chemicals, pharmaceuticals, and insubstantial and pulp. This process vigor and steam request is mostly thermal and met done combustion of fossil fuels specified coal, oil, and gas.
The contented becomes captious astatine 2 levels. First, the deepening geopolitical uncertainty and volatile home proviso chains worsens the availability of these fuels. Second, a sizeable chunk of these manufacturing emissions rests wrong the micro, small, and mean enterprises (MSMEs) predominantly concentrated successful sectors specified arsenic textiles, nutrient processing and paper. These are the sectors wherever coal, firewood, biomass, state and furnace lipid proceed to tally the accepted thermal systems specified arsenic boilers, thermic fluid heaters, dryers, evaporators and hot-water systems, etc.
This is wherefore decarbonising concern vigor is not conscionable a clime question but a socio-economic prerogative which further intertwines with different co-benefits specified arsenic aerial quality, outgo competitiveness, vigor security, and idiosyncratic well-being.
Heat pumps arsenic a solution
Heat pumps participate this speech arsenic 1 of the astir practical, scalable and modular technologies for this circumstantial frontier of concern heat. Unlike boilers, vigor pumps bash not make vigor by burning fuel. They determination and upgrade vigor from 1 steam to another, utilizing electricity. This is wherefore they tin present much utile vigor than the energy they consume.
Industrial vigor pumps often person a coefficient of show of 3 to 5, meaning they tin supply 3 to 5 units of vigor for each portion of energy consumed. Even astatine higher output temperatures, wherever show falls, they tin stay much businesslike than elemental electrical resistance-based heating. This ratio is the halfway of their decarbonisation value. It reduces the magnitude of energy needed to electrify vigor and improves the economics of switching distant from combustion. If renewable energy is disposable astatine competitory rates, the effectual outgo of vigor from a vigor pump becomes charismatic adjacent against accepted fuels arsenic of contiguous also.
What makes this modulation analyzable is the mode concern vigor is presently produced and used. In a emblematic medium-sized textile finishing portion studied successful Surat, astir 92% of vigor load was thermal, delivered done steam and concern vigor utilizing a premix of Indonesian ember and lignite. The portion consumed astir 0.42 kg of Indonesian ember per metre of processed fabric, illustrating the worldly strength of substance usage embedded successful regular operations. Despite this, steam is often utilized indirectly for generating blistery water, maintaining vas temperature, oregon heating surfaces alternatively than straight heating the product.
This reflects a cardinal inefficiency. Conventional concern thermal systems successful specified factories are often designed astir the highest vigor requirement, with boilers sized to conscionable highest demand. But galore loads necessitate lower-quality heat. In specified cases, steam is generated astatine higher somesthesia and pressure, past reduced oregon diverted for lower-temperature applications. However, concern vigor pumps follow a antithetic engineering mindset: commencement with the lowest-temperature vigor demand, past boost vigor lone wherever needed. This reverses the bequest boiler attack and tin trim wide vigor usage by 40-60% successful suitable applications.
This right-sizing logic is peculiarly applicable successful brownfield MSME clusters. Many boilers are old, oversized, manually operated successful specified settings, and tally beneath optimal capacity. Replacing each boiler with a azygous ample electrical strategy is often not practical. But vigor pumps tin beryllium modular. They tin archetypal service circumstantial loads: pre-heating boiler feedwater, supplying blistery water, supporting dyeing and washing processes, recovering discarded vigor from effluents oregon reducing steam request successful evaporators and drying streams.
Their relation becomes adjacent much prolific erstwhile heating and cooling are considered together. Industrial vigor pumps tin simultaneously make blistery water, steam, oregon blistery aerial portion producing cooling oregon dehumidified aerial arsenic a by-product. In nutrient processing and integer textile printing, wherever process vigor is required alongside controlled cooling for process stableness and instrumentality performance, vigor pumps tin simultaneously proviso utile vigor portion reducing chiller oregon air-conditioner loads.
Health, safety, emanation control
Beyond strategy efficiency, vigor pumps tin besides amended idiosyncratic wellness and safety. Workplace vigor vulnerability is emerging arsenic a superior occupational wellness risk, particularly successful labour-intensive mill environments wherever interior process vigor compounds rising ambient temperatures. Globally, implicit 2.4 cardinal workers are exposed to excessive vigor astatine work, with the highest vulnerability rates successful Asia and the Pacific. Prolonged workplace vigor is linked to vigor exhaustion, bosom stroke, cardiovascular strain, kidney disease, mishap risk, and reduced cognitive performance.
In parallel, combustion-based process vigor contributes to emanation of harmful aerial pollutants exacerbating respiratory and cardiovascular wellness risks. The nationalist wellness magnitude is significant: fossil-fuel-driven aerial contamination caused an estimated 1.72 cardinal premature deaths successful India successful 2022, with concern vigor systems being a cardinal root of these emissions. In this context, expanding the usage of electrified heating systems specified arsenic concern vigor pump technologies, peculiarly wrong the somesthesia ranges successful which they are technically feasible tin importantly amended aerial quality, mitigate greenhouse state emissions and trim wellness harms associated with some aerial contamination and clime change. By displacing on-site combustion and enabling the integration of heating and cooling, vigor pumps tin make opportunities for spot and abstraction cooling to amended thermal comfortableness connected mill floors.
What emerges, then, is not conscionable a exertion displacement but a systems transition. Scaling concern vigor pumps volition beryllium connected however good they are embedded into existing concern ecosystems done amended process integration, reliable entree to low-cost electricity, and financing models that enactment for industries, particularly MSMEs. Done right, it tin unlock not conscionable emissions reduction, but a much resilient, efficient, and safer exemplary of concern growth.
Vrinda Gupta is subordinate director, Vasudha Foundation, and Srinivas Ethiraj is adjunct manager, Vasudha Foundation.
