Highest efficiency rooftop ac? - School Bus Conversion ...

19 Aug.,2024

 

Highest efficiency rooftop ac? - School Bus Conversion ...

Simplicity

Bus Nut

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Join Date: Aug

Location: Auburn, WA

Posts: 785

Year:

Coachwork: IC / Amtran

Chassis: / 33' Flat Nose

Engine: IC T444E / Allison MT643

Rated Cap: 72 Kids / 48 Adults

Quote:

Bus'n it

Originally Posted by

Christopher, I'm looking at you! I decided to just get two rooftop units for my bus rather than dealing with cutting in mini splits and their unknown reliability bouncing around in a bus and/or dealing with installations constraints. So in my searches, I kind of like the Furrion 15.5k BTU units but they appear to be power hogs at starting watts. I do plan on shoving in many LifePo4 batteries as I can afford, but what in your experience can you recommend in terms of efficient roof top RV a/c units? I do plan on spray foaming the bus and doing dual pane RV windows.



There's two things at play here. One, the bus is a vehicle, second, the bus is a home.

Vehicles have very little to no insulation. Their metal components love to soak up heat. So, they get really hot really fast. In addition, in general, a vehicles AC system is made to work in SW desert or the cool coast of the PNW, and they have to cool the interior down quickly. In other words, a vehicle's AC has a huge job. They say for an average car AC generats, up to 40,000btu!

Vehicles used as homes have, comparatively, a huge amount of insulation in the ceiling, walls and floor. Add in energy efficient double pane windows and
a roof with a cooling coating and your vehicle is more like a home.

An average house room of say 150sqft. The rule of thumb is 20btu per square foot, so 3,000btu for this example.

Since a full size bus is ~250sqft x 20btu = 5,000btu.

So it seems like the 15.5k unit is more than adequate for general use.

Since you were talking about batteries, I'm assuming you're going to be wanting to run the AC off the batteries.

A soft start unit would seem to be the first feature I would want. This way your not surging your electrical.

The second thing I'd consider is similar to the battle of condensation. The best way to keep condensation at bay is to keep the air moisture content under control. I'd say this would be similar in wanting to keep the amount of time your AC cycles on to a minimum by keeping the internal temperature down through shade. If not shading of the bus, at least shading of the windows. Obviously you can make thermal window covers, but then you loose your view. I have yet to see them, but it would be cool if you had some kind of mini-awning for the windows. Of course, only practical when parked.

The other thing I'm wondering is how to automatically have the system fire up the generator a minute before the AC is going to cycle on. Then you would not need such a large battery bank.

Again, just random thoughts. Hope in some way it might help.

I'm going to work on that mini-awning idea for my bus.

I know nothing of this, yet, I did some research and got to thinking about this in relation to my bus. So, here's my freeflowing thinking.There's two things at play here. One, the bus is a vehicle, second, the bus is a home.Vehicles have very little to no insulation. Their metal components love to soak up heat. So, they get really hot really fast. In addition, in general, a vehicles AC system is made to work in SW desert or the cool coast of the PNW, and they have to cool the interior down quickly. In other words, a vehicle's AC has a huge job. They say for an average car AC generats, up to 40,000btu!Vehicles used as homes have, comparatively, a huge amount of insulation in the ceiling, walls and floor. Add in energy efficient double pane windows anda roof with a cooling coating and your vehicle is more like a home.An average house room of say 150sqft. The rule of thumb is 20btu per square foot, so 3,000btu for this example.Since a full size bus is ~250sqft x 20btu = 5,000btu.So it seems like the 15.5k unit is more than adequate for general use.Since you were talking about batteries, I'm assuming you're going to be wanting to run the AC off the batteries.A soft start unit would seem to be the first feature I would want. This way your not surging your electrical.The second thing I'd consider is similar to the battle of condensation. The best way to keep condensation at bay is to keep the air moisture content under control. I'd say this would be similar in wanting to keep the amount of time your AC cycles on to a minimum by keeping the internal temperature down through shade. If not shading of the bus, at least shading of the windows. Obviously you can make thermal window covers, but then you loose your view. I have yet to see them, but it would be cool if you had some kind of mini-awning for the windows. Of course, only practical when parked.The other thing I'm wondering is how to automatically have the system fire up the generator a minute before the AC is going to cycle on. Then you would not need such a large battery bank.Again, just random thoughts. Hope in some way it might help.I'm going to work on that mini-awning idea for my bus.

__________________
Steve

Bus Air Conditioning: Navigating the Cool Breeze - ACTECmax

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Technological Advancements in Cooling Systems

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Compressor and Its Role

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Condenser Functionality

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Understanding the Evaporator

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Rooftop AC Units

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Integrated Bus HVAC Systems

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Installation Process

Rooftop AC Installation Steps

Installing a rooftop AC unit involves a series of meticulous steps. From choosing the right location to connecting the refrigerant lines, a step-by-step guide ensures a smooth installation process for optimal performance.

Integrated HVAC Installation Guide

Integrated HVAC systems require a more intricate installation process. From ductwork to control panel setup, each step contributes to the seamless integration of heating, ventilation, and air conditioning components. Exploring this guide offers valuable insights for professionals in the field.

Maintenance Tips

Cleaning and Filter Replacement

Proper maintenance is key to the longevity and efficiency of bus air conditioning systems. Regular cleaning and timely filter replacements contribute to improved air quality and prevent potential issues. A detailed look at maintenance routines helps bus operators keep their systems in top-notch condition.

Professional Inspection Benefits

While basic maintenance can be handled by bus operators, periodic professional inspections are indispensable. Trained technicians can identify potential problems before they escalate, ensuring uninterrupted service and passenger satisfaction.

Common Issues and Troubleshooting

Inadequate Cooling

Inadequate cooling is a common issue that bus operators and passengers may encounter. Exploring the potential causes, from refrigerant issues to compressor malfunctions, provides a roadmap for troubleshooting and resolving these issues effectively.

Unusual Noises and Their Causes

Unusual noises emanating from the bus air conditioner can be disconcerting. This section explores the various sounds that may indicate underlying problems and offers insights into addressing them.

Addressing Refrigerant Leaks

Refrigerant leaks not only compromise cooling efficiency but also pose environmental hazards. Understanding the signs of refrigerant leaks and the necessary steps for repair and prevention is crucial for responsible bus air conditioner maintenance.

Energy Efficiency in Bus Air Conditioning

Importance of Energy-Efficient Systems

Energy efficiency is a growing concern in the transportation industry. Examining the importance of energy-efficient bus air condition systems sheds light on the benefits they bring, both environmentally and economically.

Advancements in Green Cooling Technologies

The future of bus air conditioning lies in green technologies. From eco-friendly refrigerants to solar-powered systems, exploring the latest advancements in sustainable cooling solutions showcases the industry&#;s commitment to environmental responsibility.

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Features and Advantages

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Why Choose Carrier for Buses?

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Aftermarket Options

Exploring Aftermarket Truck Air Conditioners

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Pros and Cons of Aftermarket Solutions

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Tailored Solutions for Different Vehicles

Passenger Cars

Bus air conditioning requirements differ across vehicle types. Tailoring solutions for passenger cars involves understanding the specific needs and challenges associated with these smaller vehicles.

Coach Buses

Coach buses, often used for long-distance travel, demand robust air conditioning. Exploring the unique challenges and solutions for coach buses ensures passenger comfort on extended journeys.

Heavy-Duty Trucks

Heavy-duty trucks face extreme conditions, requiring durable air conditioning systems. This section delves into the considerations for choosing the right AC system for heavy-duty trucks.

Challenges in Extreme Conditions

Coping with High Temperatures

Buses operating in hot climates face unique challenges. Exploring strategies for coping with high temperatures ensures that bus air conditioning systems perform optimally in adverse conditions.

Cold Weather Considerations

Cold weather brings its own set of challenges. From preventing system freeze-ups to maintaining passenger comfort, addressing cold weather considerations is vital for comprehensive bus air conditioning management.

Regulations and Compliance

Industry Standards for Bus Air Conditioner

Compliance with industry standards is non-negotiable. Understanding the regulations governing bus air conditioning ensures that operators adhere to safety and performance standards.

Environmental Regulations

Environmental responsibility extends to bus air conditioning systems. This section explores the environmental regulations that impact the design, use, and disposal of bus AC systems.

Future Trends in Bus Air Conditioner

Integration with Smart Technologies

The future of bus air conditioning is intertwined with smart technologies. From automated temperature control to connectivity features, exploring these trends provides a glimpse into the next generation of bus AC systems.

Sustainable Cooling Solutions

Sustainability is a key focus in the transportation industry. Investigating the development of sustainable cooling solutions showcases the industry&#;s commitment to reducing its environmental impact.

Cost Considerations

Initial Investment vs. Long-Term Benefits

Bus operators often grapple with the balance between upfront costs and long-term benefits. This section provides insights into the cost considerations associated with different types of bus air conditioner systems.

Comparative Analysis of Brands

Choosing the right brand is a critical decision for bus operators. A comparative analysis of leading brands assists in making informed choices based on factors like reliability, performance, and customer satisfaction.

Customer Reviews and Satisfaction

Analyzing User Experiences

Real-world experiences offer valuable insights into the performance and reliability of bus air conditioning systems. Analyzing customer reviews provides a nuanced perspective on different brands and models.

Tips for Choosing the Right Bus Air Conditioner

Summarizing the key considerations, this section provides actionable tips for bus operators looking to invest in a new air conditioning system, ensuring they make informed and satisfactory choices.

Case Studies

Successful Implementation Stories

Case studies highlight successful implementations of bus air conditioning systems. Examining these real-world examples provides practical insights into the challenges faced and overcome by operators.

Lessons Learned from Failures

Learning from failures is equally important. Case studies of unsuccessful implementations offer valuable lessons, helping bus operators avoid common pitfalls in the procurement and maintenance of bus air conditioning systems.

Safety Measures

Fire Prevention in AC Systems

Safety is paramount in bus air conditioning. This section explores fire prevention measures to mitigate the risk of AC-related fires, ensuring the well-being of passengers and the vehicle.

Emergency Protocols for Malfunctions

In the event of malfunctions, having clear emergency protocols is essential. This section outlines recommended procedures for bus operators to follow in case of air conditioning system failures.

Global Impact of Bus Air Conditioning

Transportation Trends Worldwide

The impact of bus air conditioning extends beyond individual journeys. Exploring global transportation trends provides a broader perspective on the role of AC systems in shaping the future of public transportation.

Cultural Variances in Cooling Preferences

Cultural differences influence cooling preferences. Understanding these variances ensures that bus operators cater to the diverse needs and expectations of passengers from different cultural backgrounds.

Conclusion

Summarizing the Importance of Bus Air Conditioning

In conclusion, bus air conditioning is not just about providing a cool environment; it&#;s about enhancing the overall travel experience. A reliable and efficient AC system contributes to passenger satisfaction, safety, and the success of bus operators.

Looking Ahead to Advancements

As technology continues to evolve, so will bus air conditioning systems. Keeping an eye on future advancements ensures that bus operators stay at the forefront of innovation, providing passengers with the best possible travel experience.

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