Optimistic Engineering

SOLAR ENERGY
Different Types of Solar Panels
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• The three main types of solar panels are monocrystalline, polycrystalline and thin-film
• Monocrystalline solar panels are the most efficient
• Polycrystalline solar panels can be the most cost effective
• Thin-film solar panels can be the best for unorthodox roof styles
• 2 Solar cell efficiency
Things to Consider Before Buying or Installing Solar Panels________________________________________Solar cell efficiency
Solar panel efficiency represents how effectively a solar panel can convert solar radiation (e.g. sunlight) into electricity. The most efficient solar panels commercially available today have solar panel efficiency just under 23%.
The average allowed efficiency according to PWD schedule of rates of PV module should be minimum 17%.
How much energy can 250-watt solar panels produce?
The energy production of a solar panel is measured in the number of kilowatt-hours (kWh). A 250-watt solar panel will produce approximately 1 kWh of solar power per day. This figure will vary depending on your geographic location, shading, the panel's power tolerance, and the angle of your panels.
Power Tolerance
Power tolerance indicates how the power output of a solar panel might differ from its nameplate rating. For example, a 300-watt panel with a +/- 5% power tolerance could actually produce anywhere from 285 watts to 315 watts under ideal conditions (as 15 watts is 5% of 300 watts). A narrower power tolerance range is preferable to a wider one, because it represents more certainty.
Temperature Coefficient
The temperature coefficient quantifies how a panel’s power capacity decreases at temperatures higher than 25°C. For example, many standard grade solar panels may produce 1 percent less electricity for every 2.7°C temperature increase above 25°C. Panels with less sensitive temperature coefficients will perform better over the long term.
Installation Guidelines for Tropicalized Country Like Bangladesh.
*Solar panels shall be installed pointing to the right direction to capture most of the solar energy to transform it into electricity with the facility to be adjusted from the horizontal to 12 degree in summer and to 35 degree in winter to get the maximum efficiency and must face the true south in our country. For fixed panel mounting system, the panels must be tilted (22.5 ± 1) degree with horizontal and must face the true south in BANGLADESH.

*As per order no 27.052.031.00.00.001.2010-847, date 07.11.2010 of Ministry of Power, Energy and Mineral Resources, the requirement for solar power installation are as follow:

 In case of Electrical Load Demand less than or equal 2KW then no solar power is required.
 In case of residential building if electrical load demand is more than 2KW then the requirement of solar load demand is 3% of total load of the building or area.
 In case of Industrial and Commercial Building if electrical load demand is less than or equal to 50KW,then the requirement of solar load is 7% of only light and fan Load of that building or area.
 In case of Industrial and Commercial Building, if the electrical load demand is above 50KW then the solar load is10% of only light and fan load of that building or area.
 In case of Garments Industry, the requirement of solar loadis 5% of only light and fan Load of that building or area.

We are dealing with high quality Substation equipments (includes Transformer, HT/LT switch gear, PFI panel, CT, PT, Metering unit, BIL Lightning Arrester , Drop Out Fuse and other spare parts of substation like Circuit Breakers transformer oil, capacitor, BUSBAR, indoor & outdoor heat shrink , Iron channel etc), world class Diesel Generator, LIFT & Escalator for commercial building, sustainable renewal energy system specially Solar Energy System, Fire Detection & Protection System , energy efficient Ducted Air Conditioner, modern Lightning Protection System-(ESEAT), PA Sound & Digital Conference System with update technology, CCTV & Surveillance System, PABX & Internet, foreign made with low cost industrial UPS AVR and Batteries.
Mission
To solve electrical problems and supply high quality authentic products with low cost. Establish relationships with each of our valued client by realizing their expectations and gaining trust
Vision
To be the most professional and reliable commercial electrical engineering service provider. Open Energy also aimed to make the country self reliant in the sector of electrical engineering.
Why You Should Select Optimistic Engineering
Committed to clients
Our ultimate goal is to ensure satisfaction of both clients by supplying products and services of the highest quality
No compromise with quality
We select the required products of customers with our technical experience and knowledge
After Sale Service
Providing after sale service is our commitment.
Technical supports
We engage our customers through our technically expert team and also by digital channels like live chat whenever they need.
Website www.optimisticengineering.com
Mail [email protected]
optimistic.engineeringbd.com
Contact 01937117575-6 01770033351

Benefits of Using PABX Systems
• Cost Efficiency: PABX systems reduce call and operational costs through automation and VoIP technology, making communication more affordable for businesses.
• Scalability: Easily expandable, PABX systems allow businesses to add or remove lines and extensions as needed, supporting growth and changing requirements.
• Advanced Features: PABX offers features like auto-attendant, call routing, conference calling, and voicemail, enhancing communication and customer service.
• Improved Productivity: Integration with CRM and unified communications streamlines workflows, enhancing overall productivity and efficiency within the organization
• Centralized Control: PABX systems provide a centralized point of control for managing all telecommunication activities, making it easier to oversee and adjust settings as needed.
• VoIP Call: Voice Over IP (internet protocol) technology to achieve the best results & call quality possible.

PA SOUND & DIGITAL CONFERENCE SYSTEM
--Innovative public communication devices deliver perfect sound output when it matters most, where it matters most.
--Our basic PA systems offer an unbeatable combination of superior sound reproduction, easy installation and perfect distribution. No matter your PA needs, we have a product that’s just right for you!
--Basic public address
Speakers, Loudspeakers, Microphones, Amplifiers & Volume Controllers
--Product Offerings
World-class, innovative designs for high performanceWide range of products for multiple PA applications – from the world-renowned specialist in public communications solutions!

Digital communications, coupled with TOA audio quality provides an outstanding conference system that can be adapted to fit any size room
Conference system amplifies
the power and influence of your speech
Your message reaches to the audience perfectly
-High Quality Audio –No Interference -No Missing