polydrops is inspired by passive house design for an energy efficient trailer


polydrops unveils the new all-electric p17a1 trailer

Polydrops returns with a more high-tech and energy-efficient iteration of its successful P17 electric camper trailer who redefined the modern 21st-camping of the century. With advanced fuel efficiency, a more streamlined aerodynamic shape and an improved interior, the new P17A1 All Electric was born out of the need for a portable, multi-use space that could be towed anywhere by any vehicle to support the transition to sustainable transportation. The Off-Grid Traveler features a sleek angular frame in aluminumadorned with an elaborate solar panel roof system and equipped with high-tech battery-powered air conditioning. Embracing passive house architectural principles, the P17A1 features optimal electrical and thermal performance allowing it to remain off-grid for days in all weather conditions, while providing its users with optimal comfort while on the move.

P17A1 all-electric trailer on the go | all images courtesy of Polydrops

integrate passive house architectural design principles

Drawing on the principles of passive house architectural design, Polygon incorporates a battery-powered air conditioning system to prepare the portable space to face all types of unexpected weather conditions, while creating a comfortable and warm atmosphere for its users. The P17A1 All Electric is designed with up to 8.7 inches of rigid insulation under its aluminum skin, minimizing energy loss through the cabin perimeter and allowing HVAC systems to operate for long periods with limited energy sources.

Founders and Creators Kyunghyun Lew and Jieun Chai outfit the fully off-grid portable space with a 4.8 kWh (up to 9.6 kWh) LiFePO4 battery as well as 260-watt (up to 520 W) solar panels and a refined inverter/charger system. The electrical system not only controls the climate in the cabin, but also continuously powers all galley equipment located aft of the P17A1 All Electric.

polydrops takes inspiration from passive house design for new high-tech fuel-efficient P17A1 trailer
the streamlined geometric shape improves aerodynamics and gives an elegant aesthetic

To achieve the practically functional and geometric aerodynamic shape of P17A1, Polydrops used computational fluid dynamics, simulating hundreds of different alternations before refining the final design. The correctly placed leading edge at the front, the fully flat underbody, the vortex generators and the rear spoiler are the key elements that reduce aerodynamic drag during trailer movement.

polydrops takes inspiration from passive house design for new high-tech fuel-efficient P17A1 trailer
integrated electric air conditioning system for user comfort

improved energy performance

Polydrops also focused on the idea of ​​energy efficiency when towing. “In general, people who tow a teardrop trailer with an electric vehicle report that even when driving at 55 mph, they will lose almost half the range, which will prevent people from using their electric vehicle for a road trip, explains the team. To solve this problem, designers started researching trailer aerodynamics for better road trip experiences with electric vehicles and conducted real-world tests with Hyundai Ioniq 5.

After two years, the All Electric P17A1 was able to travel up to 215 miles while maintaining a speed of 65 mph when towed behind an Ioniq 5. Given the Ioniq 5’s EPA rating, towing a P17A1 would only lose about 15% of its total range at 65 mph. If Ioniq 5 tows the P17A1 and drives at 55 mph, the vehicle will lose virtually no range – a significant result compared to most other similarly sized trailers, as air resistance is reduced by more than half .

polydrops takes inspiration from passive house design for new high-tech fuel-efficient P17A1 trailer
the self-contained trailer can remain off-grid for several days, even in unexpected weather conditions

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