Energy Efficiency and Conservation Solutions
Energy Efficiency and Conservation are two sides of the same coin - one of efforts to cut down on the energy footprint – especially of large Consumers like Industry and Commercial organisations. There are several benefits to these measures such as a reduction in the overall energy costs, a drop in the pollution levels along-with the substantial ‘savings’ in Energy consumed. There have been several incentives be it in cash or kind- Carbon Credits, tax sops and so on- which also act as triggers for large Corporations to opt for such measures.
In the Indian context with ever increasing gap between production and consumption and huge losses in transmission every bit of Energy saved counts. The adage that 1 unit of Energy saved is more than 2 units produced is very true currently.
While Efficiency measures work on existing systems by improving the processes and techniques, Conservation measures enforce energy/power cycling (switching on/off) on systems based on a host of stimuli and performance parameters.
From an overall perspective, the larger savings and effectiveness due to Energy Efficiency drives can be achieved by focussing on big-consumers who tend to be inefficient in many ways. These are the services and manufacturing industries and the big-ticket items when it comes to energy consumption across industries are the HVACs, Air-conditioning & Refrigeration systems, Motors, Lighting, IT Assets and Boilers/Process heat.
Ideally both these measures have to be deployed and operated while ensuring that overall performance parameters of the systems are not altered and end-results are similar –if not better- compared to the previous state. However we see that in many cases energy savings become the primary objective leading to other performance requirements like user comfort in the case of HVAC-getting seriously compromised. Customers are advised to be aware of such products and technologies in the market- including imported ones- which deliver much less than what they profess.
EIESPL team’s offerings in these areas are designed not to compromise on critical parameters while striving to deliver energy savings and operational efficiencies.
A few key drivers in our efforts include:
- Do not enforce control logic which fouls with the conventional process flow/logic which has been tried and tested- for instance the Hysteresis curve and Temperature range around the set-temp point wherein the system has to operate with Customer comfort in mind- should not be shrunk in the name of ‘Thermodynamic saturation’.
- Have systems and logic that ‘influences’ the existing process rather than changes those.
- Identify key points of inefficiencies in systems and arrive at solutions for those- Eg. Condensor and Evaporator being the key sub-systems which can be worked on for improving performance and efficiency in an HVAC/Chiller/Refrigeration system- along with Variable drives for the motors involved.
- Do not replace an existing system with a new one which promises much lower consumption if the same comes out with collateral effects on other parameters- Eg. LEDs are fine in lower wattages- but higher wattage streetlights etc. have been found to create glare related side-effects. Newer HID designs like Ceramic Xenon (CXL) is much better than LED for High-Lux outdoor installations- and even provide 30% more savings than LEDs!
- In Conservation solutions do not work with fixed one-size-fits-all approach. Factor in ambient conditions and data (time, temperature, humidity, occupancy etc.) to provide a dynamic and more-to-the-day solution.
- Try leveraging natural lighting ( Day-light harvesting) and cooling ( Free-cooling/Enthalpy Economising) where it is possible to cut-down on “artificial” lighting and cooling
- Look at collateral aspects of large systems including De-scaling of water/liquid lines where there can be substantial scope of savings.
Facts and Stats
Energy usage profile of a typical enterprise