A Cost Effective Heating Solution for Industries

As the price of the fuel is increasing day by day. Most industrialists are struggling with this high fuel pricing. They are looking for some alternative cost-effective heating solutions for their industries. 

 

Biomass gasification is a good way to reduce your fuel cost. In the biomass gasification process gas has been generated from the solid waste (Wood, Pellets, etc.) This gas is called producer gas or syngas. Producer gas is mainly composed of Nitrogen, Carbon mono oxides, methane, and nitrogen. It is a highly cost-effective replacement for LPG, Diesel, CNG, PNG, LDO, etc.

Let's take an example to understand more about the cost-effectiveness of a Wood Biomass gasifier.

The calorific value of Wood in Kcal/kg=2640

Calorific Value of Diesel in Kcal/Liter=9,500 

To replace the 1 liter of Diesel, a Wood Biomass gasifier will required=9,500/2640= 3.5 kg of Wood

If we take the price of wood=6 Rs. Per kg (It can Varies Place to Place )

Price of 3.5 kg of wood=6*3.5=21 Rs.

Currently the price of 1 Liter of diesel =100 Rs.

Money saved by wood gasifier=100-21=79 Rs.

That means industrialists can save 79 Rs. per liter of diesel with the help of a wood biomass gasifier.

How to Search Mechanical Engineering Jobs on Internet?

Getting a job in mechanical engineering is a bit difficult but if we work in the right way, we can get a very good mechanical engineering job.

Mostly whenever we search for mechanical engineering jobs on the internet, we use only one keyword and that keyword is "mechanical engineering jobs".  In such a situation, Google and its algorithms give us the same result where Mechanical Engineering Jobs is written. In such a situation, we do not find many options for mechanical engineering jobs on the internet. We have to find mechanical engineering jobs very smartly on the internet. Today I am going to tell you some more such keywords, with the help of which you can find mechanical engineering jobs on the internet.

Some keywords that will help you get your mechanical engineering Jobs

1. Mechanical Engineer 

2. Design Engineer 

3. Power Plant Engineer 

4. Maintenance Engineer 

5. Quality control engineer

6. Technical Person

7. Plumbing Engineer

8. Research Engineer

9. Fabrication Engineer

10. CAD/Autocad/Creo/Solid works Experts

11. Production engineer

12. Material Handling engineer

13. Thermal Engineer

14. Technical Sells Engineer

15. MATLAB Experts

16 CNC Programming engineer

17 Project Engineer

18. CFD Engineer

These are some of the keywords with the help of which you can find many mechanical engineering jobs on the internet. You can also search these keywords in different locations. For example like Production Engineer in Ahmedabad or Production Engineer in Surat etc.

I hope these techniques will help you so that you can find a good job on the internet.

Energy-efficient Buildings Policy

1. ECBC (Energy Conservation Building code) 

The government of India launched ECBC in 2007 to improve the building efficiency in India. ECBC

codes are applicable to all commercial buildings of 100 KW-H. Generally, more than 1000 meters square size building comes in this category. ECBC stabilizes standards on ventilation, air conditioning, building envelop, lighting (Interior and Exterior), service of hot water, etc. for minimum energy consumption in buildings. ECBC permits buildings to be compliant through three methods: instructional, simple trade-offs, and whole-building performance. This building energy policy will help to reduce the electricity consumption by 20% in Gujrat (A state in India) when compared with the no policy scenario. These results are obtained when the ECBC code is implemented robustly.

2. Green Building Program

Green Rating for Integrated Habitat Assessment (GRIHA) is highly applicable for a new building with 2500 m² floor space. It includes many kinds of buildings like offices, hospitals, hotels, health care facilities, institutes, multi-family high-rise buildings. GRIHA assesses the life cycle of a building on the basis of environmental principles, accepted energy and its main objective is to promote green building and work in buildings with no harm to the environment.

3. BEE (Bureau of Energy Efficiency) star rating 

This is a voluntary program and is done for commercial buildings, in which the building score is rated from 1 to 5. Star rating gives on the operation energy consumption of the building. 5 Star means the most energy-efficient building.

4. LEED Program

LEED stands for Leadership in energy and environment design.  It is a green building certification system. It evaluates the building performance on different conditions like sustainability, water efficiency, indoor environment quality, building planning, construction, maintenance, etc.  

Energy Efficient Technology for buildings

From the various study, it has been found that high energy is consumed by the building sector. To reduce energy consumption various technology can be adopted. Here few technologies are listed that can be used to reduce electricity consumption in buildings. 

1. Variable flow refrigerant system (VRF)

VRF system is also known as VRV (Variable refrigerant flow) system. It is an important HVAC technique that is widely used for buildings to make energy-efficient systems. It is a ductless HVAC system. It can provide heating and cooling simultaneously. It is a bulky and low-volume system. VRF system has a single outdoor condensing unit and refrigerant circulated within the building to multiple indoor units without the benefit of the duct. A VRF system uses variable-speed motors and variable refrigerant flows to heat and cool, unlike standard units which use a simple on/off operation. It has inverter compressors that run with lower power consumption and partial heating or cooling load and multiple indoor units on the same refrigerant loop. 

When another indoor unit is turned on, the outdoor unit recalculates the requirements from all of the indoor units and increases the compressor load, according to demands. The ability for a VRF HVAC system to adjust to the outdoor conditions is its ”secret sauce” and what makes it so energy efficient, compared with traditional water-cooled systems with chillers and fan coils.

2. Radiant Cooling

Radiant cooling is the method of providing cooling by removing sensible heat from the room by thermal radiation. Primarily cooling is done by thermal radiation and secondarily it is done by convection. More than one-half of heat transfer is done by thermal radiation. It is cheaper than a conventional air conditioning system. Heat radiated by room or occupants is absorbed by the radiant cooling system. When the floor is cooled, it is often referred to as radiant floor cooling; cooling the ceiling is usually done in homes with radiant panels. These radiant panels are made of aluminum. It is an energy-efficient cooling system. It can save electricity consumption by approximately 40% compared with a conventional air conditioning system. 

3. Phase change Material (PCMs)

Phase change material (PCMs) can store the thermal energy as well as it can release the thermal energy also. These materials are incorporated with concrete to reduce the energy consumption from the buildings. The principle of the phase change material (PCM) use is simple. As the temperature of the building increases, the material changes its phase from a solid-state to a liquid state. The reaction being endothermic, the PCMs absorbs heat. Similarly, when the temperature decreases, the material changes phase from liquid to solid. The reaction being exothermic, the PCMs desorbs heat. Many applications of phase change material already exist in building materials, such as in drop ceilings, metal roofs, and stud walls. These uses have been used to save energy, create more efficient cooling and heating systems. It reduces the dependency on the usage of fossil fuels. 

4. Passive cooling

These systems are the least expensive means of cooling a home that enhance the performance of the building without any use of any devices. It is a building design approach that helps to provide thermal comfort by removing heat gain in the building and providing low or no energy consumption. It depends upon natural heat-sinks to detach heat from the system. Various passive cooling techniques are natural ventilation, earth air tunnel, shading, wind tower, evaporative cooling, roof sprays, etc.   

A Career in Mechanical Engineering

There are lots of branches in engineering like civil, mechanical, electrical, electronics, computer science, mechanical, chemical, etc. You might be thinking about mechanical engineering. There are lots of questions arising in your mind. What are the options available in mechanical engineering? Is it good to go for mechanical engineering? What kind of job I will get after doing mechanical engineering?  What are the subjects available in mechanical engineering? What skills set I will get after doing mechanical engineering? you will get the answer to these questions in this article. 

1. What are the options available in mechanical engineering?

Mechanical engineering is an evergreen branch of engineering. It includes Manufacturing, Refrigeration, air conditioning, designing of the product, renewable energy, robotics, etc. We can not imagine our life without all of these. Options are limitless in mechanical engineering. You can create your career in the above-given field. Here are the options available for you in mechanical engineering.

1. You can go to higher studies (M.Tech., Ph.D.) in the above-given field.

2. You can go for the job in the above-given sectors.

3. You can start your own business and become an entrepreneur.

4. You can start preparing for a government job as well.

2. Is it good to go for mechanical engineering?

Yes, mechanical engineering is good for your career. The world is being driven by technology. Mechanical engineering is the second-largest and one of the oldest disciplines; the broadest of all engineering disciplines. Mechanical engineers apply the principles of mechanics and energy to the design of machines and devices. Mechanical engineering deals with material science, mechanics, heat, production, design, etc. related to technologies. These are very essential areas of mechanical engineering,  without these areas, we can not produce any component. Mechanical engineering applies the principle of physics to all these above-given areas.  Here are a few skills that will be enhanced with mechanical engineering.

1. Problem-Solving skills

2. Creativity and innovation

3. Teamwork and leadership

4. Mathematics and computer skills

5. Research and Development skills

3. What kind of job I will get after graduating in mechanical engineering?

Here are the few works that are done by the mechanical engineers

• Analyze problems to see how mechanical and thermal devices might help solve a particular problem.
• Design or redesign mechanical and thermal devices or subsystems, using analysis and computer-aided design.
•  Investigate equipment failures or difficulties to diagnose faulty operation and to recommend remedies.
• Develop and test prototypes of devices they design. Analyze the test results and change the design or system as needed.

4. Job Profile of a Mechanical Engineer  

Here are a few job profile

• Analytical engineer
• Junior Engineer
• Design engineer
• Test engineer
• Manufacturing engineer
• Development engineer
• Research engineer
• Sales engineer
• Engineering manager
• Consulting engineer
• Simulation/CFD Engineer

5. What are the subjects available in mechanical engineering? 

Mechanical Engineering broadly divided into 3 categories. Subjects of these 3 categories are mention below.

I hope you have learned many things about mechanical engineering through this article. 

 

Turbocharging and Supercharging with Comparison

The main goal of an engineer is to improve the performance and emission characteristics of the engine. Increasing the mean effective pressure of the engine is one of the effective methods of increasing the power output of the engine. The mean effective pressure of the engine can be increased by increasing the pressure of the air-fuel mixture. Supercharging is one of the methods to improve the power output of the engine. In this method, we supply the air or fuel-air mixture at a higher pressure than the naturally aspirated pressure. The instrument which increases the pressure is called the supercharger. The turbocharger is the type of supercharger which is driven by a turbine wheel that uses energy in exhaust gases. Let's discuss supercharger and turbocharger.

Engine Supercharger

Engine Turbocharger

Supercharger

The 'supercharger ' is driven mechanically (belt, gear, etc.) by the engine. It increases the power output of the engine and improves the atomization of the fuel. The main objective of the supercharger is to increase the air density before it enters the combustion chamber. Some power output of the engine is used to run the compressor. But the overall net power output of the engine is higher than the engine without a supercharger with the same configuration. Supercharging also increased the cooling requirements of pistons and valves. The temperature and pressure of the engine are increased due to the supercharging. 

Working of Supercharger

 Turbocharger

 A turbocharger is used to increase engine efficiency, reduce fuel consumption, and lower emissions. A turbocharger is a forced induction device that improves the performance and emissions of the engine. It is the process of forcing compressed air into the intake for combustion. The turbocharger is designed to rotate over 1 lac RPM. With a turbocharger introduced the exhaust gas from combustion turns the turbine wheel. This turbine wheel rotates the compressor wheel which is attached by a connecting shaft. This compressor sucks the more air and sends it to the combustion chamber. A turbocharger provides more fresh air to expand on combustion and produces more power. Fresh air makes human's lungs healthy in the same way highly compressed, highly hot and fresh air make the engine more powerful.

Working of Turbocharger

Comparison of Supercharger and Turbocharger

1. The efficiency and mileage of the turbocharger are better than the supercharger because the turbocharger is converting exhaust gas (waste) energy into useful energy. 
2.  Oil consumption is low in a supercharger compare to the turbocharger because the overall temperature of the process is low in the supercharger. 
3. The supercharger gives a more stable and continuous power response compare to the turbocharger.

Summary of the article

If you want an efficient and more milage then you can go with the turbocharged engine. But if you want the more refinement in the engine (excellent torque, power) and good response of your accelerator then you can go with a supercharged engine.

Future of Internal Combustion (IC) engine in India

The government of India is aiming that by 2030 the nation will run on 100 percent electric vehicle (EV). Next thing that comes in our mind that " Is it possible to replace all conventional engines by the electric vehicle?"  It will be hard to achieve this. Let's discuss some points related to the Internal Combustion (IC) engine and some points related to Electrical vehicles.

 Points related to IC engine

• It is quite a mature technology. Therefore it will difficult to replace this technology with another technology.
• IC engine provides excellent torque, power, and a good response to your accelerator.
• It is very much useful for heavy-duty works.
• It is beneficial in long-distance traveling. 
• There are lots of work and research that has been done from the last few decades in the IC engine (Alternative fuels, Supercharging, Cylinder deactivation, etc.), and still, much research is going on the IC engine to improve performance and emission characteristics.
• India has an infrastructure and set up for using this technology.
• People know about most of the costs (maintenance cost, running cost) associated with the IC engine.  

 Points related to Electric Vehicle (EV)

• In India, most of the electric power plants are based on fossil fuel (about 60 to 70%). These power plants emit lots of harmful emissions to the environment.
• More Load comes upon the electrical company (Production and consumption)
• It is a quite new technology. There may be lots of work and research is required.  
• Difficult to use the EV for long-distance traveling.
• India has not infrastructure and charging station for EV.
• India is still struggling with electricity distribution in some areas.
• Human does not accept the changes frequently.
• COVID-19 may also affect the research and work progress on EV in India 

There may be some progress in Electric vehicles in the future. And there may be growth in the production of electrical vehicles in the future in India. 

However, researchers and scientists are searching for renewable fuel sources and doing many other modifications for IC engines. India is also setting high emission standards (BS6) for vehicles to reduce harmful emissions. Most of the senior-level people of companies are also predicting excellent growth in the IC engine technology in the future.   

Students those who want to pursue their career in engine technology or mechanical engineering have a lot of scope in this sector. Because it will difficult or impossible to replace IC engine technology with some other type of technology.